JP6396125B2 - Ophthalmic equipment - Google Patents

Description

  The present invention relates to an ophthalmologic apparatus that performs automatic alignment on an eye to be examined.

  Some ophthalmologic apparatuses include an eye characteristic measurement unit that measures optical characteristics (eye characteristics) of a subject eye by projecting measurement light onto the subject eye and receiving reflected light of the measurement light. In the ophthalmologic apparatus, since it is necessary to project the measurement light at an appropriate position on the eye to be examined, alignment is performed so that the position of the eye characteristic measuring unit with respect to the eye to be examined is appropriate. In such an ophthalmologic apparatus, it is known that an alignment target is formed on an image of an eye to be inspected by an alignment optical system, and automatic alignment is performed by moving an eye characteristic measuring unit with the position of the alignment target as a target. (For example, see Patent Document 1). Thereby, in the ophthalmologic apparatus, the eye to be examined can be easily and appropriately measured by the eye characteristic measuring unit.

JP 2013-078524 A

  However, in the above-described ophthalmologic apparatus, the alignment target cannot be detected properly, and automatic alignment may not be performed properly. Then, in the ophthalmologic apparatus, after performing the alignment operation for moving the eye characteristic measurement unit with the position of the inappropriate alignment target as a target, notification that the automatic alignment has not been properly performed is performed. In this case, the examiner who uses the ophthalmologic apparatus waits until receiving the notification, that is, until the alignment operation is completed, assuming that the measurement is performed, and the alignment operation is completed automatically. Will be able to grasp that was not able to be done properly. For this reason, in the ophthalmologic apparatus, when automatic alignment cannot be appropriately performed, an operation for properly performing the alignment is performed after the alignment operation is completed, and the time required for measuring optical characteristics (eye characteristics) Will increase.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ophthalmologic apparatus that makes it possible to grasp that automatic alignment cannot be properly performed before the alignment operation ends. And

In order to solve the above-described problem, the ophthalmologic apparatus according to claim 1 includes an eye characteristic measurement unit that measures optical characteristics of the eye to be examined, and a drive unit that moves the eye characteristic measurement unit with respect to the eye to be examined. ,
An observation optical system that acquires an image of the eye to be examined, a display unit that displays an image of the eye to be examined acquired by the observation optical system, the eye characteristic measurement unit, the drive unit, the observation optical system, and the display unit A control unit that controls the bright spot due to the reflection of the alignment index light irradiated to the subject eye from the cornea of the subject eye in the image of the subject eye acquired by the observation optical system The position of the alignment target is set to the position of the eye or the position in the image of the eye to be examined acquired by the observation optical system as a reference, and the main optical axis of the eye characteristic measurement unit is made to coincide with the set alignment target the eye characteristic measurement part has an automatic alignment mode for moving said at automatic alignment mode, wherein the subject's eye image acquired by the observation optical system aligner to The position of the cement target superimposed target position marking symbols, characterized in that to be displayed on the display unit.

The ophthalmologic apparatus according to claim 2 is the ophthalmologic apparatus according to claim 1 , wherein the control unit is set by the auxiliary operation when an auxiliary operation for setting a movement target position is performed in the auto alignment mode. In addition, the position of the alignment target is set in the image of the eye to be examined acquired by the observation optical system while moving the eye characteristic measurement unit with the movement target position as a target.

The ophthalmologic apparatus according to claim 3 is the ophthalmologic apparatus according to claim 2 , wherein the alignment target is set to a position of a bright spot due to reflection of the alignment index light irradiated to the eye to be examined from the cornea of the eye to be examined. In this case, when the movement target position is set by the auxiliary operation, the control unit determines the bright spot closest to the movement target position in the image of the eye to be examined acquired by the observation optical system as the alignment target. It is characterized by setting as.

An ophthalmologic apparatus according to a fourth aspect is the ophthalmologic apparatus according to the second or third aspect , wherein the auxiliary operation sets the movement target position by designating an arbitrary position on the display surface of the display unit. It is characterized by setting.

The ophthalmologic apparatus according to claim 5 is the ophthalmologic apparatus according to any one of claims 2 to 4 , wherein the auxiliary operation sets the position of the target position marking symbol on a display surface of the display unit. The moving target position is set by moving the moving target position.

The ophthalmologic apparatus according to claim 6 is the ophthalmologic apparatus according to claim 4 or 5 , wherein the display unit has a touch panel function, and the control unit executes the auto alignment mode. When an arbitrary position on the display surface is touched, the operation in the auto alignment mode is interrupted to wait for the auxiliary operation to be performed.

The ophthalmologic apparatus according to claim 7 is the ophthalmologic apparatus according to any one of claims 1 to 6 , wherein the control unit performs an alignment operation in the auto alignment mode on the eye to be examined. On the other hand, when it is determined that the eye characteristic measurement unit is in an appropriate position, the optical characteristic measurement of the eye to be examined is performed by the eye characteristic measurement unit.

The ophthalmologic apparatus according to claim 8 is the ophthalmologic apparatus according to any one of claims 1 to 7 , wherein the control unit applies to the eye to be examined even when an alignment operation is performed in the auto alignment mode. On the other hand, when it is determined that the eye characteristic measurement unit is not in an appropriate position, an alignment error is notified.

An ophthalmologic apparatus according to a ninth aspect is the ophthalmologic apparatus according to any one of the first to eighth aspects, wherein the control unit has a manual alignment mode in which the eye characteristic measurement unit is moved by a manual operation. When the operation for switching to the manual alignment mode is performed in the auto alignment mode, the mode is switched to the manual alignment mode.

The ophthalmologic apparatus according to claim 10 is acquired by an observation optical unit that observes an eye to be examined and acquires an image of the eye to be examined, a drive unit that moves the observation optical unit with respect to the eye to be examined, and the observation optical unit. A display unit that displays an image of the eye to be examined; and a control unit that controls the observation optical unit, the drive unit, and the display unit, wherein the control unit acquires the eye to be examined acquired by the observation optical unit. The alignment target is positioned at a position of a bright spot due to reflection of the alignment index light irradiated to the eye to be examined from the cornea or a position in the image of the eye to be obtained acquired by the observation optical unit in the image of set the position, has automatic alignment mode for moving the observation optical part to match the main optical axis of the observation optical unit to the alignment targets set, the auto-alignment In over de, characterized in that to be displayed on the display section overlapping the target position indication mark at a position of the alignment target in the acquired subject's eye image in the observation optical unit.

  According to the ophthalmologic apparatus of the present invention, it is possible to grasp that the automatic alignment cannot be properly performed before the alignment operation is completed.

  In addition to the above-described configuration, if the alignment target is set to the position of a bright spot due to the reflection of the alignment index light irradiated to the eye to be examined from the cornea of the eye to be examined, automatic alignment can be appropriately performed. It is possible to grasp whether or not it can be performed, and it is possible to easily grasp the cause when automatic alignment cannot be appropriately performed.

  In addition to the configuration described above, if the alignment target is set at a position based on the pupil in the image of the eye to be examined acquired by the observation optical system, whether or not automatic alignment can be appropriately performed. Can be grasped, and when the automatic alignment cannot be performed properly, the cause can be easily grasped.

  In addition to the above-described configuration, when an auxiliary operation for setting a movement target position is performed in the auto alignment mode, the control unit sets the eye characteristic measurement unit with the movement target position set by the auxiliary operation as a target. When the position of the alignment target is set in the image of the eye to be examined acquired by the observation optical system while moving the position of the target position marking symbol on the image of the eye to be examined displayed on the display unit Accordingly, the movement of the eye characteristic measuring unit with respect to the eye to be examined can be promoted to a position where the alignment target can be appropriately detected, and automatic alignment is appropriately performed, that is, the eye to be examined (its image). ) To properly form an alignment target and appropriately detect the alignment target.

  In addition to the above-described configuration, the alignment target is set to the position of a bright spot due to the reflection of the alignment index light irradiated to the subject's eye from the cornea of the subject's eye, and the control unit is moved by the auxiliary operation When the target position is set, if the bright spot closest to the moving target position is set as the alignment target in the image of the eye to be examined acquired by the observation optical system, the correct bright spot image and other bright spots Even if is set as the alignment target, if the movement target position is set to the correct luminescent spot image (and its vicinity) by an auxiliary operation, it is possible to prevent other luminescent spots detected by mistake from being used as the alignment target. Thus, only the correct bright spot image can be set as the alignment target.

  In addition to the above-described configuration, when the auxiliary operation is to set the movement target position by designating an arbitrary position on the display surface of the display unit, the examiner moves the eye characteristic measurement unit. The target position can be set easily and with a high degree of freedom, and the examiner can easily and appropriately set the movement target position according to the situation of the actual eye to be examined (its image). The probability of appropriately performing automatic alignment can be improved.

  In addition to the configuration described above, when the auxiliary operation sets the movement target position by moving the position of the target position marking symbol on the display surface of the display unit, an eye characteristic measurement unit by an examiner The target position for moving the eye can be set easily and with a high degree of freedom, and the examiner can easily and appropriately set the target position for movement according to the actual condition of the eye (the image). And the probability of properly performing automatic alignment can be improved.

  In addition to the above-described configuration, the display unit is equipped with a touch panel function, and the control unit performs the auxiliary operation when an arbitrary position on the display surface is touched while executing the auto alignment mode. If the operation in the auto alignment mode is interrupted to wait for the operation to be performed, the auxiliary operation can be performed appropriately and without feeling uncomfortable regardless of the operation in the auto alignment mode being executed. It can be.

  In addition to the above-described configuration, when the control unit determines that the eye property measurement unit is in an appropriate position with respect to the eye to be examined by performing an alignment operation in the auto alignment mode, the eye property If measurement of the optical characteristic of the eye to be examined is performed by the measurement unit, the optical characteristic (eye characteristic) of the eye to be examined can be measured quickly, and usability can be improved.

  In addition to the configuration described above, if the control unit determines that the eye characteristic measurement unit is not in an appropriate position with respect to the eye to be examined even if the alignment operation in the auto alignment mode is performed, an alignment error occurs. If the automatic alignment cannot be performed properly instead of relying solely on the judgment of the examiner by displaying the target position marking symbol on the display unit (including the case where it is not displayed) This makes it possible for the examiner to reliably grasp this, and to improve usability.

  In addition to the configuration described above, the control unit has a manual alignment mode in which the eye characteristic measurement unit is moved by a manual operation, and when the operation to switch to the manual alignment mode is performed in the auto alignment mode, By switching to the alignment mode, the optical characteristics (eye characteristics) of the eye to be examined can be measured quickly according to the situation, and the usability can be improved.

  An observation optical unit that observes the eye to be examined and acquires an image of the eye to be examined, a drive unit that moves the observation optical unit with respect to the eye to be examined, and an image of the eye to be examined that is obtained by the observation optical unit A display unit, and a control unit that controls the observation optical unit, the drive unit, and the display unit, and the control unit is configured to position the alignment target in the image of the eye to be examined acquired by the observation optical unit. And the alignment target in the image of the eye to be examined acquired by the observation optical unit in the auto alignment mode in the auto alignment mode. According to the ophthalmologic apparatus in which the target position marking symbol is superimposed on the position and displayed on the display unit, automatic alignment is performed before the alignment operation is completed. It is possible to enable grasping of being state not properly performed.

It is explanatory drawing which shows typically the structure of the ophthalmologic apparatus 10 of the Example which concerns on this invention. 3 is a block diagram illustrating a configuration of a control system of the ophthalmologic apparatus 10. FIG. 2 is an explanatory diagram for explaining an optical configuration of the ophthalmologic apparatus 10. FIG. 4 is an explanatory diagram for explaining a configuration of a kerato ring pattern; It is explanatory drawing for demonstrating the display content displayed on the display surface 14a of the display part 14 in the scene where the measurement by the eye characteristic measurement part 30 is performed, and it is the bright spot image S as an alignment target in the anterior eye part image E '. A state in which the target position marking symbol 41 is displayed in an overlapping manner is shown. It is explanatory drawing similar to FIG. 5, and has shown the mode that the focus determination symbol 42 was displayed on the anterior segment image E ′. 3 is a flowchart showing an alignment measurement control process (alignment measurement control method) executed by a control unit 21. 3 is a flowchart showing an auxiliary operation determination control process (auxiliary operation determination control method) executed by a control unit 21. 3 is a flowchart showing a manual measurement control process (manual measurement control method) executed by a control unit 21. It is explanatory drawing similar to FIG. 5, and has shown the case where the bright spot image S was able to be detected appropriately. It is explanatory drawing similar to FIG. 5, and has shown the case where the glossy object 43 has been detected as a luminescent spot image. FIG. 13 is an explanatory diagram similar to FIG. 5, showing a state in which the target position marking symbol 41 is moved from the state of FIG. 11 to a position matched with the bright spot image S. FIG. 13 is an explanatory diagram similar to FIG. 5, showing a state where the corneal center (the vicinity thereof) in the anterior segment image E ′ is designated as the designated position 44 from the state of FIG. 11. FIG. 6 is an explanatory view similar to FIG. 5 and shows a state where the corneal center (the vicinity thereof) in the anterior segment image E ′ is designated as the designated position 45 when the bright spot image S is not formed.

  Embodiments of an ophthalmic apparatus according to the present invention will be described below with reference to the drawings.

  An ophthalmologic apparatus 10 as an embodiment of an ophthalmologic apparatus according to the present invention will be described with reference to FIGS. An ophthalmologic apparatus 10 shown in FIG. 1 is an ophthalmologic apparatus including an eye characteristic measuring unit 30 (see FIG. 3) that measures optical characteristics (eye characteristics) of an eye E to be examined. The ophthalmologic apparatus 10 (the eye characteristic measurement unit 30) measures the eye refractive power and the corneal shape by objective measurement as the optical characteristic (eye characteristic) of the eye E (objective measurement function), It is possible to measure an optical characteristic (eye characteristic) including the eye refractive power of the eye E by measurement (a subjective measurement function). For the eye E, FIG. 3 schematically shows a fundus (retina) Ef and a cornea (anterior eye portion) Ec.

  As shown in FIG. 1, the ophthalmologic apparatus 10 is configured such that an apparatus main body 13 is movably provided on a base 11 via a drive unit 12 (see FIG. 2). The apparatus main body 13 is provided with an eye characteristic measuring unit 30 (its optical system (see FIG. 3)), which will be described later, on the inner side, and a display unit 14, a chin rest 15 and a forehead holding unit 16 on the outer side. It has been.

  The display unit 14 is formed of a liquid crystal display, and is an image (anterior segment image E ′) of the anterior segment (cornea Ec) of the eye E under the control of a control unit 21 (see FIG. 2) described later. And various operation screens, measurement results, and the like are displayed on the display surface 14a (see FIG. 5 and the like). In this embodiment, the display unit 14 is equipped with a touch panel function, an operation for measuring optical characteristics (eye characteristics), an operation for photographing the anterior segment (cornea Ec), and the apparatus main body. It is possible to perform an operation for moving the unit 13, an operation for switching between subjective measurement and objective measurement, an operation for switching a target for objective measurement, an auxiliary operation described later, and the like. . Moreover, the display part 14 displays the various symbols (refer FIG. 5 etc.) as an icon for each operation mentioned above using the function of a touch panel, and enables operation by touching each said symbol. .

  The operation for performing the measurement may be performed by providing a measurement switch on the periphery of the base 11, the apparatus main body 13 or the display unit 14 and operating the measurement switch. Further, the operation for moving the apparatus main body 13 is performed by providing a control lever or a movement operation switch on the periphery of the base 11, the apparatus main body 13 or the display unit 14, and operating the control lever or the movement operation switch. You may do it.

  The jaw holder 15 and the forehead support 16 fix the position of the face of the subject (patient), that is, the eye E to be measured with respect to the apparatus main body 13, and are fixed to the base 11 and provided. Yes. The chin receiving portion 15 is a place where the subject places his chin, and the forehead holding portion 16 is a place where the subject places the forehead. In the apparatus main body 13, when the subject's face is fixed by the chin rest 15 and the forehead support 16, the subject's eye E is a keratring pattern 38 to be described later and an objective lens 31 q located at the center thereof (See FIGS. 3 and 4). Therefore, appropriate measurement (objective measurement and subjective measurement) of the eye E can be performed by the optical system of the ophthalmologic apparatus 10 (the eye characteristic measurement unit 30).

  In this ophthalmologic apparatus 10, the display unit 14, the chin rest unit 15 and the forehead support unit 16 are provided on both sides of the apparatus main body unit 13, and are displayed during normal use (see FIG. 1). The portion 14 (the display surface 14a) is on the examiner side, and the chin rest 15 and the forehead portion 16 are on the subject side. Although the illustration of the display unit 14 is omitted, the display unit 14 is rotatably supported by the apparatus main body unit 13 to change the orientation of the display surface 14a, for example, to direct the display surface 14a toward the subject, The surface 14a can be directed to the side (X-axis direction). The apparatus main body 13 (the eye characteristic measurement unit 30) is moved with respect to the base 11 by the drive unit 12 (see FIG. 2), that is, the object fixed by the chin rest 15 and the forehead support 16. It is possible to move with respect to the optometry E (the face of the subject).

  The drive unit 12 is configured such that the apparatus main body 13 with respect to the base 11 in the vertical direction (Y-axis direction) and the front-rear direction (Z-axis direction (display unit 14, chin rest 15 and forehead portion during normal use). 16 are aligned in the direction parallel to the main optical axis O1 of the eye characteristic measuring unit 30)) and the left-right direction (X-axis direction) perpendicular thereto. In this embodiment, the upper side in the vertical direction is the positive side in the Y-axis direction, the subject side in the front-rear direction (the left rear side when viewed from the front in FIG. 1) is the positive side in the Z-axis direction, and the horizontal direction In FIG. 1, the left front side is the positive side in the X-axis direction when viewed from the front (see the arrow in FIG. 1). In the present embodiment, as shown in FIG. 2, the drive unit 12 includes an X motor 12a, a Y motor 12b, and a Z motor 12c, and an X driver 12d, a Y driver 12e, and a Z driver 12f for driving each of them. And have.

  The X motor 12a moves (displaces) the apparatus main body 13 (eye characteristic measurement unit 30) in the X-axis direction (left-right direction) with respect to the base 11. In other words, the X motor 12a is configured to move the apparatus main body 13 (eye characteristic measurement unit 30) in the X-axis direction (left-right direction) in the drive unit 12. The X motor 12a is appropriately driven when the control unit 21 controls the X driver 12d.

  The Y motor 12b moves (displaces) the apparatus main body 13 (eye characteristic measurement unit 30) in the Y-axis direction (vertical direction) with respect to the base 11. In other words, the Y motor 12b is a location for moving the apparatus main body 13 (eye characteristic measurement unit 30) in the Y-axis direction (vertical direction) in the drive unit 12. The Y motor 12b is appropriately driven by controlling the Y driver 12e by the control unit 21.

  The Z motor 12 c moves (displaces) the apparatus main body 13 (eye characteristic measurement unit 30) in the Z-axis direction (front-rear direction) with respect to the base 11. In other words, the Z motor 12c is a location for moving the apparatus main body 13 (eye characteristic measurement unit 30) in the Z-axis direction (front-rear direction) in the drive unit 12. The Z motor 12c is appropriately driven when the control unit 21 controls the Z driver 12f.

  For this reason, the drive unit 12 drives the X motor 12a, the Y motor 12b, and the Z motor 12c appropriately to move the apparatus main body 13 (eye characteristic measurement unit 30) in the vertical direction (Y-axis direction) with respect to the base 11. ), In the front-rear direction (Z-axis direction), and in the left-right direction (X-axis direction). In other words, the control unit 21 appropriately controls the drive unit 12, that is, appropriately drives the X motor 12a, the Y motor 12b, and the Z motor 12c via the X driver 12d, the Y driver 12e, and the Z driver 12f. Thus, the apparatus main body 13 (eye characteristic measurement unit 30) can be appropriately moved with respect to the chin rest 15 and the forehead support 16 fixed to the base 11.

  The control unit 21 constitutes an electric control system in the ophthalmologic apparatus 10 and comprehensively controls each unit of the ophthalmologic apparatus 10 by a program stored in the built-in storage unit 21a. As will be described later, the control unit 21 appropriately drives and controls the drive unit 12 based on the detection result (the signal) from the focus determination circuit 22 and the detection result (the signal) from the alignment determination circuit 23. 11 is adjusted. The control unit 21 also includes a target light source 31a, a glare light source 31w, an anterior ocular segment illumination light source 32a, a reflex measurement light source 33a, an XY direction detection light source 35a, a kerato-ring-shaped index projection light source 37, and a Z direction detection. The light source 39a is connected via a driver (drive mechanism) for performing lighting control corresponding to each light source 39a, and the light emission of each of these light sources is appropriately controlled.

  In addition, the control unit 21 displays the image on the display unit 14 (the display surface 14a) based on an image acquired by an imaging element 32g (see FIG. 3) of the anterior segment observation optical system 32 described later. In addition, the control unit 21 displays a target position marking symbol 41 (see FIG. 5 and the like) and an in-focus determination symbol 42 (see FIG. 6), which will be described later, on the display unit 14 (the display surface 14a). Further, as will be described later, the control unit 21 displays various symbols as icons that enable a selection (switching) operation by touching using the function of the touch panel in the display unit 14 (see FIG. 5 and the like).

  Next, the control unit 21 is connected to a switching drive unit 31s of an index switching unit 31d (see FIG. 3), which will be described later. The switching drive unit 31s is controlled to be switched. In addition, the control unit 21 drives and controls the target focusing mechanism 31D to appropriately move a focusing lens 31h (see FIG. 3) to be described later, and moves the index to appropriately move the index unit 33U (see FIG. 3). The mechanism 33D is driven and controlled, and the index focusing mechanism 34D is driven and controlled to appropriately move the focusing lens 34e (see FIG. 3). The control unit 21 drives and controls a drive unit (not shown) in order to adjust the relative posture and the integral posture of a pair of cylinder lenses in a VCC lens 31k (see FIG. 3) described later. Further, the control unit 21 drives and controls the shutter 32c so that a shutter 32c (see FIG. 3) described later is switched between an open state and a closed state.

  Next, the configuration of the control system of the ophthalmologic apparatus 10 will be described. As shown in FIG. 2, the ophthalmologic apparatus 10 includes a focus determination circuit 22 and an alignment determination circuit 23 in addition to the control unit 21 described above. An imaging element 32g is connected to the control unit 21, and a signal based on light reception of the imaging element 32g, that is, an image of the anterior segment of the eye E (anterior segment image E ′ (see FIG. 5 and the like)). In addition, a signal or the like as a ring-shaped index image (its image) for eye refractive power measurement (ref measurement) described later is transmitted. Since the test eye E is formed with a later-described kerato-ring-shaped index image, a bright spot image S (see FIG. 5 and the like) by XY alignment index light, and a Z-direction detected bright spot image, Along with the image (anterior segment image E ′), signals as those images are transmitted to the control unit 21. And the control part 21 is connected to the display part 14, produces | generates an image signal suitably based on the light reception signal from the image pick-up element 32g, and displays the image based on the light reception signal from the image pick-up element 32g on the display part 14 (its display). Displayed appropriately on the surface 14a) (see FIG. 5 etc.). The control unit 21 is connected to the shutter 32c and drives and controls the shutter 32c as described above. The control unit 21 is connected to the drive unit 12 (the X driver 12d, the Y driver 12e, and the Z driver 12f), and appropriately controls the drive unit 12 as described above to control the base body 11 with respect to the apparatus main body unit. 13 is moved appropriately. The control unit 21 appropriately executes each operation described above based on an operation on the display unit 14 or according to a program stored in the storage unit 21a. That is, the movement of the apparatus main body 13 with respect to the base 11 based on the operation on the display unit 14 is the movement of the apparatus main body 13 by a manual operation.

  Based on the detection signal from the image sensor 32g, the focusing determination circuit 22 is configured so that the optical configuration of the eye characteristic measurement unit 30 (ophthalmic device 10), which will be described later (the device main body 13 that accommodates it), is the eye E (to be examined). It is detected whether or not the fundus oculi Ef (see FIG. 3) or the anterior segment (cornea Ec) is in focus, that is, whether or not the amount of deviation in the front-rear direction (Z-axis direction) is within an allowable range. In this in-focus determination circuit 22, in order to determine the in-focus (deviation amount), the kerato formed by a kerato-ring-shaped index projection light source 37, which will be described later, in the anterior eye portion (anterior eye image E ′) of the eye E to be examined. Signals acquired by the imaging element 32g of a ring-shaped index image (its image) and a Z-direction detection bright spot mark (its image) formed by a Z-direction detection parallel projection system 39 described later are used. Then, the focus determination circuit 22 outputs the detection result (the signal) to the control unit 21. Then, the control unit 21 moves the apparatus main body 13 in the Z-axis direction (front-rear direction) with respect to the base 11 based on the detection result (the signal) from the focus determination circuit 22, and the focus determination circuit 22. The Z alignment can be automatically performed by performing the movement until the signal indicating the completion of focusing (indicating that the amount of deviation is within the allowable range) is received. For this reason, moving the apparatus main body 13 in the Z-axis direction (front-rear direction) with respect to the base 11 based on the detection result (the signal) from the focus determination circuit 22 is the Z-axis direction (front-rear direction). This is the alignment operation.

  Further, as shown in FIG. 6, the control unit 21 generates a focus determination symbol 42 based on the detection result (the signal) from the focus determination circuit 22, and displays it on the display unit 14 (the display surface 14a). Display. The focus determination symbol 42 indicates a focus completion position (a position where the shift amount is within an allowable range) and is shifted forward (Z-axis direction positive side) with respect to the focus completion position. It is possible to indicate whether it is shifted to the rear side (Z-axis direction negative side) and the amount of shift. In the present embodiment, the focus determination symbol 42 includes a focus indicator 42a and a plurality of deviation amount indicators 42b. When the in-focus determination symbol 42 is the in-focus completion position, only the in-focus indicator 42a is displayed to indicate the in-focus completion position. Further, when the focus determination symbol 42 is not the focus completion position, the shift amount indicator 42b is displayed on both sides of the focus indicator 42a, and as the shift amount in the front-rear direction (Z-axis direction) increases. It is assumed that the number of the deviation amount indicating parts 42b is increased (in the illustrated example, two lines are respectively displayed with virtual lines). Further, the focus determination symbol 42 is shifted (closer) to the front side (Z-axis direction positive side) with respect to the focus completion position, and the rear side (Z-axis direction negative) with respect to the focus completion position. The direction of the shift is indicated by changing the color between the case where it is shifted (separated) from the side and the side. The focus determination symbol 42 is used when the shift amount in the front-rear direction (Z-axis direction) cannot be determined by the focus determination circuit 22, that is, the anterior eye of the eye E based on the signal acquired by the image sensor 32g. If it is impossible to make a determination using a later-described kerato-ring-like index image (its image) and a later-described Z-direction detection luminescent spot mark (its image) in the part (anterior eye image E ′), It is not displayed on the display surface 14a). In other words, when the focus determination symbol 42 is in a range (detectable range) in which the focus determination circuit 22 can determine the amount of deviation in the front-rear direction (Z-axis direction), the display unit 14 (the display surface 14a). Is displayed.

  The focus determination symbol 42 may be displayed in a different manner as long as it is possible to grasp whether or not it is the focus completion position, and is limited to the configuration of the present embodiment. Is not to be done. Even in such a case, the focus determination symbol (42) is shifted to the front side (Z-axis direction positive side) with respect to the focus completion position as described above. It is preferable that it is possible to grasp whether the displacement is in the negative direction (Z-axis direction), and it is more preferable that the displacement amount in each direction can be grasped.

  The alignment determination circuit 23 is based on the detection signal from the image sensor 32g, and the main optical axis O1 of the optical (see FIG. 3) configuration (apparatus main body 13) of an eye characteristic measurement unit 30 (ophthalmic apparatus 10) described later. And the optical axis of the eye E to detect whether or not the amount of deviation in the direction along the XY plane (hereinafter also referred to as the XY direction) is within an allowable range. The amount of deviation can be represented by, for example, the amount of deviation in the left-right direction (X-axis direction) and its direction, and the amount of deviation in the up-down direction (Y-axis direction) and its direction. In this alignment determination circuit 23, an XY alignment index image formed by the XY alignment light projection optical system 35 in the anterior eye part (anterior eye image E ′) of the eye E to be examined is described later in order to determine the amount of deviation. A signal acquired by the image sensor 32g of (bright spot image S) (its image) is used. Then, the alignment determination circuit 23 outputs the detection result (the signal) to the control unit 21. Then, the control unit 21 moves the apparatus main body 13 in the X-axis direction (left-right direction) and the Y-axis direction (up-down direction) with respect to the base 11 based on the detection result (the signal) from the alignment determination circuit 23. XY alignment can be automatically performed by performing the movement until a signal indicating that the amount of deviation is within the allowable range is received from the alignment determination circuit 23. For this reason, moving the apparatus main body 13 in the XY directions (left and right direction and up and down direction) with respect to the base 11 based on the detection result (the signal) from the alignment determination circuit 23 is the XY direction (left and right direction and This is an automatic alignment operation in the direction perpendicular to the main optical axis O1 of the eye characteristic measuring unit 30, which will be described later.

  As described above, the apparatus main body 13 is provided with the optical configuration of the ophthalmologic apparatus 10, that is, the optical system as the eye characteristic measuring unit 30, inside the housing 13 a that forms the outer shape. The eye characteristic measuring unit 30 (ophthalmologic apparatus 10) can measure the optical characteristic (eye characteristic) of the eye E, and in this embodiment, the eye refractive power (spherical power, Astigmatic power, astigmatic axis angle, etc.) and the shape of the cornea Ec of the eye E to be examined can be measured.

  Next, the optical configuration of the eye characteristic measuring unit 30 (ophthalmic apparatus 10) will be described with reference to FIG. As shown in FIG. 3, the eye characteristic measurement unit 30 includes a target projection optical system 31, an anterior ocular segment observation optical system 32, a reflex measurement projection optical system 33, a reflex measurement light receiving optical system 34, and an XY alignment light projection optical system 35. And a kerato-ring type index projection optical system 36.

  The target projection optical system 31 projects a target (fixed target) for fixation on the fundus oculi Ef of the subject eye E in order to fixate and cloud the subject eye E. Further, the target projection optical system 31 projects a target (a subjective target) for gazing at the subject on the fundus oculi Ef of the eye E in order to ask the subject how to look in order to perform subjective measurement. To do. The anterior ocular segment observation optical system 32 observes the anterior ocular segment (cornea Ec) of the eye E to be examined. In order to measure the eye refractive power of the eye E, the reflex measurement projection optical system 33 uses a pattern light beam (measurement light) as a ring-shaped index for eye refractive power measurement (ref measurement) and a fundus oculi Ef of the eye E to be examined. Project to. The reflex measurement light receiving optical system 34 causes the imaging element 32g to receive the eye refractive power measurement (reflective measurement) ring index reflected from the fundus oculi Ef of the eye E. The reflex measurement projection optical system 33 and the reflex measurement light receiving optical system 34 together with the anterior ocular segment observation optical system 32 constitute an eye refractive power measurement optical system. The XY alignment light projection optical system 35 projects the index light toward the eye E to detect the alignment state in the XY directions. In order to measure the shape (corneal shape) of the cornea Ec of the eye E, the keratoling index projection optical system 36 projects a light beam (measurement light) as a kerato-ring index and projects it onto the cornea Ec of the eye E. To do. The keratring-shaped index projection optical system 36, together with the anterior ocular segment observation optical system 32, constitutes a corneal shape measurement optical system.

  The target projection optical system 31 includes a target light source 31a, a color correction filter 31b, a collimator lens 31c, an index switching unit 31d, a half mirror 31e, a relay lens 31f, a mirror 31g, a focusing lens 31h, and a relay on the optical axis O2. A lens 31i, a field lens 31j, a variable cross cylinder lens 31k (hereinafter also referred to as a VCC lens 31k), a mirror 31m, a dichroic filter 31n, a dichroic filter 31p, and an objective lens 31q.

  The index switching unit 31d switches the target to be projected onto the fundus oculi Ef of the eye E to be examined (presented on the eye E) by the target projection optical system 31, and in this embodiment, the turret unit 31r and the switching drive unit. 31s. The turret portion 31r is provided so as to be rotatable about a rotation shaft 31t, and supports a plurality of targets when viewed in the rotation direction. And the turret part 31r can position any one of a plurality of supported targets on the optical axis O2 by rotating around the rotation axis 31t. The switching drive unit 31s is driven under the control of the control unit 21 (see FIG. 2), thereby rotating the turret unit 31r via the rotation shaft 31t and changing the rotation posture of the turret unit 31r. For this reason, in the index switching unit 31d, under the control of the control unit 21, any one of a plurality of targets supported by the turret unit 31r is positioned on the optical axis O2. In this embodiment, each of the targets is transmitted through the light (light flux) emitted from the target light source 31a and corrected by the color correction filter 31b. Presentation to the fundus oculi Ef is possible.

  In this embodiment, the turret unit 31r is used as a landscape chart 31u as a target for fixation (fixation target) and as a target (gaze target) for causing a subject to gaze for subjective measurement. And a VA (Visual Accuracy) chart 31v. The landscape chart 31u is a visual target (fixed visual target) for causing the subject to gaze for fixation, and indicates a landscape including a portion that is easy to gaze. The VA chart 31v is a subjective visual target for performing a visual acuity test by asking the examinee how to look (subjective measurement). Characters such as alphabets and hiragana having a prescribed size for each visual acuity And Landolt rings are shown. Further, the turret portion 31r is not shown in the figure, but can also appropriately support a subjective visual target. In the present embodiment, the landscape chart 31u indicating the landscape is used as the fixation target. However, the target chart may be any target that allows the subject to gaze for fixation, and is limited to the configuration of the present embodiment. Is not to be done.

  As shown in FIG. 3, the target light source 31a is a light source for projecting a target supported by the turret unit 31r and positioned on the optical axis O2 onto the eye E. In this embodiment, the target light source 31a LEDs are used. The focusing lens 31h is movable along the optical axis O2 of the target projection optical system 31 by the target focusing mechanism 31D so as to fixate and cloud the eye E. The target focusing mechanism 31D is driven under the control of the control unit 21 (see FIG. 2) to move the focusing lens 31h to an arbitrary position on the optical axis O2. In the VCC lens 31k, a pair of cylinder lenses can rotate independently, and both lenses rotate in opposite directions to change the power of astigmatism, and both lenses are integrated in the same direction. Astigmatism axis angle is changed by rotating it periodically. The VCC lens 31k is driven by a drive unit (not shown) under the control of the control unit 21 (see FIG. 2), thereby adjusting the astigmatism power and the astigmatic axis angle in the astigmatism examination. The position where the dichroic filter 31p and the objective lens 31q are provided is on the main optical axis O1 in the anterior ocular segment observation optical system 32 (optical configuration of the eye characteristic measurement unit 30 (ophthalmic apparatus 10)). It is said that. For this reason, in the ophthalmologic apparatus 10, when performing the measurement, the eye E of the subject whose face is fixed by the jaw holder 15 and the forehead holder 16 is positioned on the main optical axis O1.

  In addition, in the target projection optical system 31, a glare light source 31w is provided on the optical axis O2 ′. The optical axis O2 ′ is obtained by extending the optical axis O2 from the half mirror 31e in the target projection optical system 31 from the half mirror 31e through the relay lens 31f to the mirror 31g. The glare light source 31w is for projecting glare light onto the eye E to be inspected by the target projection optical system 31, and an LED is used in this embodiment. The glare light source 31w is turned on under the control of the control unit 21 (see FIG. 2) when performing a glare test for determining whether or not the eye E has a cataract. Then, the glare luminous flux emitted from the glare light source 31w passes through the half mirror 31e and travels on the optical axis O2 of the target projection optical system 31, and is covered similarly to the target luminous flux described later. Proceed to optometry E.

  In the target projection optical system 31, white light is emitted from the target light source 31a, and the white light is changed to a desired color by the color correction filter 31b, and then converted into a parallel light beam by the collimator lens 31c. Then, the target luminous flux (the target positioned on the optical axis O2) is transmitted to obtain a target luminous flux. In the target projection optical system 31, the target luminous flux is reflected by the half mirror 31e, passed through the relay lens 31f, then reflected by the mirror 31g and advanced to the focusing lens 31h. In the target projection optical system 31, the target luminous flux passes through the focusing lens 31h, the relay lens 31i, the field lens 31j, and the VCC lens 31k, is reflected by the mirror 31m, passes through the dichroic filter 31n, and passes through the dichroic filter 31p. To proceed. In the target projection optical system 31, the target luminous flux is reflected by the dichroic filter 31p onto the main optical axis O1 in the anterior ocular segment observation optical system 32, and is advanced to the eye E through the objective lens 31q. . Thereby, in the target projection optical system 31, the target positioned on the optical axis O2 by the index switching unit 31d is optically detected by the anterior segment observation optical system 32 (the eye characteristic measurement unit 30 (the ophthalmologic apparatus 10)). It can be presented (projected) to the eye E on the main optical axis O1 in the configuration.

  The target projection optical system 31 fixes the subject's line of sight by causing the subject to gaze at the target luminous flux as the fixation target projected onto the eye E through the landscape chart 31u as the fixation target. To do. The target projection optical system 31 moves the focusing lens 31h from a state in which the subject is gazing as a fixation target to a position where focus is not achieved, thereby bringing the eye E into a cloudy state. In addition, the target projection optical system 31 causes the subject to gaze at the target luminous flux as the subjective target projected onto the eye E through the chart (VA chart 31v, etc.) as the subjective target, Awareness measurement is performed according to the awareness target. For this reason, the eye characteristic measurement unit 30 (the ophthalmologic apparatus 10) can perform the visual acuity test by using the VA chart 31v in the subjective measurement. Further, when other charts are used, a test according to the chart can be performed.

  The anterior ocular segment observation optical system 32 includes an anterior ocular segment illumination light source 32a, and a half mirror 32b, a shutter 32c, a relay lens 32d, a dichroic filter 32e, an imaging lens 32f, and an image sensor 32g on the main optical axis O1. The objective projection optical system 31, the objective lens 31q, and the dichroic filter 31p are shared. The image sensor 32g is a two-dimensional solid-state image sensor, and a CCD (charge coupled device) image sensor is used in this embodiment. The anterior segment illumination light source 32a is a light source for illuminating the anterior segment (cornea Ec) of the eye E to be examined. A plurality of the anterior ocular segment illumination light sources 32a (see FIG. 3) surround the keratring pattern 38 to be described later at the end of the apparatus main body 13 on the subject side in the front-rear direction (the positive side in the Z-axis direction). (Only two are shown). Each anterior segment illumination light source 32a is lit to directly illuminate the anterior segment (cornea Ec) of the eye E to be examined.

  The anterior ocular segment observation optical system 32 illuminates the anterior ocular segment (cornea Ec) of the eye E with the illumination luminous flux emitted from each anterior ocular segment illumination light source 32a, and the illumination luminous flux reflected by the anterior ocular segment. Obtained with the objective lens 31q. At this time, in the anterior ocular segment observation optical system 32, the optical path on the main optical axis O1 is opened with the shutter 32c opened. In the anterior ocular segment observation optical system 32, the reflected illumination light beam passes through the objective lens 31q, passes through the dichroic filter 31p and the half mirror 32b, passes through the relay lens 32d and the dichroic filter 32e, and then forms an image pickup element 32g ( An image is formed on the light receiving surface. The imaging device 32g outputs an image signal based on the acquired image to the control unit 21 (see FIG. 2). The control unit 21 displays an image of the anterior segment (cornea Ec) on the display unit 14 (see FIG. 1) based on the input image signal (see FIG. 5 and the like). Therefore, in the anterior ocular segment observation optical system 32, an image of the anterior ocular segment (cornea Ec) can be formed on the image sensor 32g (its light receiving surface), and an image of the anterior ocular segment (the anterior segment) is displayed on the display unit 14. The eye image E ′) can be displayed. Note that when the refractive power is measured after the alignment is completed, the anterior segment illumination light source 32a of the anterior segment observation optical system 32 may be turned off and the optical path on the main optical axis O1 may be closed with the shutter 32c closed.

  The reflex measurement projection optical system 33 includes a reflex measurement light source 33a, a collimator lens 33b, a conical prism 33c, a reflex measurement ring 33d, a relay lens 33e, a pupil ring 33f, a field lens 33g, and a perforated prism 33h on the optical axis O3. It has a rotary prism 33i and shares the target projection optical system 31, the dichroic filter 31n, the dichroic filter 31p, and the objective lens 31q. The reflex measurement light source 33a and the pupil ring 33f are disposed at an optically conjugate position, and the reflex measurement ring 33d and the fundus oculi Ef of the eye E are disposed at an optically conjugate position. The reflex measurement light source 33a, the collimator lens 33b, the conical prism 33c, and the reflex measurement ring 33d constitute an index unit 33U. This index unit 33U is optical axis O3 of the reflex measurement projection optical system 33 by the index movement mechanism 33D. It is possible to move integrally along.

  In the reflex measurement projection optical system 33, the light beam emitted from the reflex measurement light source 33a is converted into a parallel light beam by the collimator lens 33b, and is advanced to the reflex measurement ring 33d via the conical prism 33c. The luminous flux passes through a ring-shaped pattern portion formed on the reflex measurement ring 33d and becomes a pattern luminous flux as a ring-shaped index for eye refractive power measurement (reflective measurement). In the reflex measurement projection optical system 33, the pattern light beam travels through the relay lens 33e, the pupil ring 33f, and the field lens 33g to the perforated prism 33h, and is reflected by the reflecting surface of the perforated prism 33h to be a rotary prism. It advances to the dichroic filter 31n through 33i. In the reflex measurement projection optical system 33, the pattern light beam is reflected by the dichroic filter 31n after being reflected by the dichroic filter 31n, so that it is reflected on the main optical axis O1 of the anterior ocular segment observation optical system 32 (eye characteristic measurement unit 30). Make it progress. In the reflex measurement projection optical system 33, the pattern light flux is imaged on the fundus oculi Ef of the eye E by the objective lens 31q. Thereby, in the reflex measurement projection optical system 33, on the main optical axis O1 in the anterior ocular segment observation optical system 32 (eye characteristic measurement unit 30), a ring-shaped index for eye refractive power measurement (ref measurement) as measurement light. The pattern light beam can be projected toward the fundus oculi Ef of the eye E to be examined.

  The ref measurement light receiving optical system 34 includes, on the optical axis O4, a hole 34a of the perforated prism 33h, a field lens 34b, a mirror 34c, a relay lens 34d, a focusing lens 34e, and a mirror 34f. The system 31, the objective lens 31q, the dichroic filter 31p and the dichroic filter 31n are shared, the reflex measurement projection optical system 33 and the rotary prism 33i are shared, and the anterior ocular segment observation optical system 32, the dichroic filter 32e, and the imaging lens 32f And the image sensor 32g is shared. The focusing lens 34e is movable along the optical axis O4 of the reflex measurement light receiving optical system 34 by an index focusing mechanism 34D. The index focusing mechanism 34D appropriately moves the focusing lens 34e to focus on the anterior segment (cornea Ec) of the eye E under the control of the control unit 21 (see FIG. 2).

  In the reflex measurement light receiving optical system 34, the pattern reflected light beam guided to the fundus oculi Ef by the reflex measurement projection optical system 33 and reflected by the fundus oculi Ef is condensed by the objective lens 31q, reflected by the dichroic filter 31p and then dichroic. The light is reflected by the filter 31n and travels to the rotary prism 33i. In the reflex measurement light receiving optical system 34, the reflected pattern reflected light beam travels through the rotary prism 33i to the hole 34a of the holed prism 33h and passes through the hole 34a. In the reflex measurement light receiving optical system 34, the pattern reflected light beam that has passed through the hole 34a is reflected by the mirror 34c after passing through the field lens 34b, and is advanced to the focusing lens 34e via the relay lens 34d. At this time, in the reflex measurement light receiving optical system 34, the pattern reflected light beam, that is, the image formation position of the reflex measurement ring-shaped index is on the image sensor 32g (its light receiving surface) on the optical axis O4 of the focusing lens 34e. The position is adjusted. In the reflex measurement light receiving optical system 34, the pattern reflected light beam passes through the focusing lens 34e, is reflected by the mirror 34f, and is reflected by the dichroic filter 32e, whereby the anterior ocular segment observation optical system 32 (eye characteristic measuring unit). 30) on the main optical axis O1. In the reflex measurement light receiving optical system 34, a pattern reflected light beam, that is, a reflex measurement ring-shaped index is imaged on the image sensor 32g (its light receiving surface) by the imaging lens 32f. The imaging device 32g outputs an image signal based on the acquired image to the control unit 21 (see FIG. 2). The control unit 21 causes the display unit 14 (see FIG. 1) to display an image of the ring index for reflex measurement based on the input image signal. For this reason, the reflex measurement light receiving optical system 34 can form an image of a reflex measurement ring-shaped index on the image sensor 32g (its light receiving surface), and the image sensor 32g can acquire the image data. An image of the ref measurement ring-shaped index can be displayed on the display unit 14.

  The XY alignment light projection optical system 35 includes an XY direction detection light source 35a and a condensing lens 35b. The XY alignment light projection optical system 35 shares the anterior ocular segment observation optical system 32 and half mirror 32b, and the target projection optical system 31 and dichroic filter. 31p and the objective lens 31q are shared. The XY direction detection light source 35a is a spot-like light source that forms an XY alignment index light beam, and an LED is used.

  In the XY alignment light projection optical system 35, the XY alignment index light beam from the XY direction detection light source 35 a is condensed by the condenser lens 35 b and then reflected by the half mirror 32 b, so that the anterior ocular segment observation optical system 32 ( It advances on the main optical axis O1 of the eye characteristic measuring unit 30). Then, in the XY alignment light projection optical system 35, the XY alignment index light beam travels through the dichroic filter 31p to the objective lens 31q, and is projected toward the cornea Ec of the eye E through the objective lens 31q. The XY alignment index light beam projected toward the eye E (cornea Ec) is reflected by the cornea Ec of the eye E so that a bright spot image as an XY alignment index image is formed inside the eye E. S is formed. Therefore, the anterior eye portion observation optical system 32 forms an image of the anterior eye portion (cornea Ec) on which the luminescent spot image S is formed on the image sensor 32g (its light receiving surface). An anterior eye image (anterior eye image E ′) on which the image S (the image) is formed can be displayed. As will be described later, the XY alignment light projection optical system 35 uses the bright spot image S as the formed XY alignment index image to enable adjustment of the position in the XY direction, so-called XY alignment. For this reason, the XY alignment light projection optical system 35 has an XY alignment index image (bright spot image S) as an alignment target on the image of the anterior eye part (anterior eye part image E ′) of the eye E in the eye characteristic measurement unit 30. ) To function as an alignment light projection optical system (alignment optical system).

  Therefore, the examiner moves the apparatus main body 13 so that the bright spot image S as the XY alignment index image (alignment target) is positioned in an alignment mark (not shown), thereby performing XY alignment by manual operation. It can be carried out. Further, the examiner performs XY alignment by manual operation by moving the apparatus main body 13 so that an arbitrary position in the anterior segment image E ′ is positioned on the main optical axis O1 of the eye characteristic measurement unit 30. be able to. In the auto-alignment mode, the ophthalmic apparatus 10 has the apparatus main body 13 for the eye E to be examined from the position of the bright spot image S as the XY alignment index image (alignment target) by the alignment determination circuit 23 as described above. The X-axis direction and Y-axis direction shift amounts are obtained, and the control unit 21 controls the X driver 12d and the Y driver 12e according to the shift amounts, thereby moving the apparatus main body 13 in the XY direction to perform XY alignment. Do.

  The keratring-shaped index projection optical system 36 is provided in relation to the main optical axis O1 of the anterior ocular segment observation optical system 32 on the front side of the objective lens 31q. A shape measuring ring) pattern 38. The kerato-ring-like index projection light source 37 is provided at a predetermined distance from the eye E (cornea Ec) on the kerato-ring pattern 38 and is provided concentrically with respect to the main optical axis O1 of the anterior ocular segment observation optical system 32. Yes. As shown in FIG. 4, the kerato ring pattern 38 has a plate-like shape as a whole, a center hole 38a centering on the main optical axis O1, and a plurality of slits 38b having an annular shape at concentric positions with respect to the main optical axis O1. And a transmission hole 38c that makes a pair at the same position from the main optical axis O1. In the kerato ring pattern 38, the center position of the center hole 38a is aligned with the main optical axis O1, and the objective lens 31q is exposed from the center hole 38a. The kerato-ring index projection light source 37 is provided corresponding to the slit 38b of the kerato-ring pattern 38, and passes through the corresponding slit 38b to the eye E (cornea Ec) as a light beam (measurement light) as a kerat-ring index. ) Is projected (see FIG. 3). The luminous flux is projected onto the cornea Ec of the eye E, thereby forming a kerato-ring index on the cornea Ec. For this reason, the anterior eye portion observation optical system 32 forms an image of the anterior eye portion (cornea Ec) on which the keratoling-like index is formed on the image pickup device 32g (its light receiving surface), thereby kerating on the display unit 14. An anterior eye image (anterior eye image E ′) on which a shape index (its image) is formed can be displayed.

  As shown in FIG. 3, the eye characteristic measuring unit 30 is provided with a Z-direction detecting parallel projection system 39 on the rear side of the kerato ring pattern 38 of the kerato ring index projection optical system 36. In the Z-direction detection parallel projection system 39, a Z-direction detection light source 39a and a condenser lens 39b are provided corresponding to a pair of transmission holes 38c (see FIG. 4) of the kerato ring pattern 38. The Z-direction detection parallel projection system 39 condenses the light beams emitted from the respective Z-direction detection light sources 39a by the corresponding condenser lenses 39b and passes through the corresponding transmission holes 38c (see FIG. 4) of the kerato ring pattern 38. Advancing to the optometry E, a Z direction detection bright spot image is formed. This Z-direction detection parallel projection system 39 uses the formed Z-direction detection luminescent spot image together with the keratling-shaped index image formed by the above-described kerato-ring-shaped index projection light source 37, so that the front-rear direction (Z-axis direction ) Can be adjusted, so-called Z-axis alignment.

  For this reason, the examiner moves the apparatus main body 13 so that the relative positional relationship between the Z-direction detection luminescent spot image and the kerato-ring-like index image is appropriate, thereby performing Z alignment by manual operation. It can be performed. Further, as described above, the examiner confirms that the in-focus determination symbol 42 generated based on the relative positional relationship between the Z-direction detection luminescent spot image and the kerato-ring index image is the in-focus completion position. By moving the apparatus main body 13 as shown, Z alignment by manual operation can be performed. In the auto-alignment mode, the ophthalmologic apparatus 10 uses the signal from the imaging element 32g based on the Z-direction detection luminescent spot image and the kerato-ring index image as described above. Thus, the amount of deviation in the Z-axis direction of the apparatus main body 13 with respect to the eye E is obtained, and the control unit 21 controls the Z driver 12f in accordance with the amount of deviation to appropriately move the apparatus main body 13 in the Z-axis direction. Perform Z alignment.

  In the ophthalmologic apparatus 10, under the control of the control unit 21 (see FIG. 2), as shown in FIG. 5 and the like, the anterior eye part (anterior eye image E ′) of the eye E to be examined is displayed on the display surface 14a of the display unit 14. In addition to the above image, various symbols are displayed as icons that enable a selection (switching) operation by touching using the function of the touch panel in the display unit 14. In the present embodiment, on the display surface 14a of the display unit 14, the central image display region 14b is a display region for displaying an image such as an anterior segment (anterior segment image E ′). On the display surface 14a of the display unit 14, a left symbol display area 14c on the left side of the image display area 14b, a right symbol display area 14d on the right side, and a lower symbol display area 14e on the lower side are displayed to display various symbols. As an area.

  In the image display area 14b, a target position marking symbol 41 (see FIG. 5), which will be described later, and the focus determination symbol 42 (see FIG. 6) described above are appropriately superimposed on the anterior segment image E ′. In the image display area 14b, although not shown, measurement results by objective measurement and other characters, symbols, codes, figures, and the like related to the examination are appropriately superimposed on the anterior segment image E ′.

  In the left symbol display area 14c, a keyboard button B1, an R button B2, a chin rest up / down button B3, and a measurement mode button B4 are displayed as various symbols. The keyboard button B1 is used to input a patient ID. The R button B2 is used to select the subject eye E (right eye) on the right side of the subject as a measurement target. The chin rest vertical movement button B3 is used to adjust the height position of the eye E to be examined by moving the chin rest 15 (see FIG. 1) up and down to change the height position. The measurement mode button B4 is used to switch to one of the measurement modes of ref (measurement of eye refractive power), kerato (measurement of corneal shape), and ref / kerato (continuous measurement of ref and kerato).

  In the right symbol display area 14d, as various symbols, a setup button B5, an L button B6, a measurement head front / rear button (Z-axis direction button) B7, a start button B8, and a manual / auto switching button B9 are displayed. The The setup button B5 is used to display a setup screen. The L button B6 is used to select the left eye E (left eye) of the subject as a measurement target. The measurement head front / rear button B7 is used when the apparatus main body 13 (eye characteristic measurement unit 30) is driven in the front-rear direction with respect to the eye E. The start button B8 is used to execute measurement in the manual alignment mode. The manual / auto switching button B9 adjusts (aligns) the position of the eye characteristic measuring unit 30 (device main body unit 13) with respect to the eye E automatically (auto alignment mode) or manually (manual operation (manual operation (manual)). Used to select the alignment mode)). When the manual alignment mode is selected, the touched portion (tap position) in the image displayed on the display surface 14a of the display unit 14 is positioned at the center position on the display surface 14a under the control of the control unit 21. Thus, the apparatus main body 13 (eye characteristic measurement unit 30) is moved in the vertical direction (Y-axis direction), the horizontal direction (X-axis direction), and the front-back direction (Z-axis direction). When the manual alignment mode is selected, a symbol (movement button) for manual operation on the display surface 14a of the display unit 14 under the control of the control unit 21, that is, the apparatus main body unit 13 (eye characteristic measurement unit). 30) a symbol (moving button) for moving in a vertical direction (Y-axis direction), a horizontal direction (X-axis direction), and a front-back direction (Z-axis direction) is displayed. In the manual alignment mode, under the control of the control unit 21, the apparatus main body 13 (eye characteristics) according to the operation performed on each symbol (moving button) displayed on the display unit 14 (display surface 14 a). The measurement unit 30) is moved in the vertical direction (Y-axis direction), the horizontal direction (X-axis direction), and the front-back direction (Z-axis direction).

  In the lower symbol display area 14e, as various symbols, a cataract button B10, a fixation target button B11, a corneal diameter button B12, a print button B13, a graphic print button B14, a target image button B15, and all measured values. Clear button B16 is displayed. The cataract button B10 is used when measurement is applied to an eye to be examined (cataract eye) that has developed cataract. The fixation target button B11 is used to change the brightness of the fixation target. The corneal diameter button B12 is used when switching to a mode for measuring the diameter of the cornea. The print button B13 is used to print out the measurement result, and is used to feed paper when there is no measurement result. The graphic print button B14 is used to print out a graphic indicating the refraction state. The target image button B15 is used when displaying the stored measurement target on the display surface 14a. The all measured value clear button B16 is used to erase (clear) data of all measured values.

  Next, the eye refractive power (spherical power, astigmatism power, astigmatism axis angle, etc.) of the eye E and the shape of the cornea Ec of the eye E are measured using the above-described ophthalmologic apparatus 10 (eye characteristic measuring unit 30). An outline of the operation will be described. In addition, the following operation | movement in the ophthalmologic apparatus 10 (eye characteristic measurement part 30) is performed under control of the control part 21 (refer FIG. 2). First, the power switch of the ophthalmologic apparatus 10 is turned on, and an operation for performing objective measurement on the display unit 14 is performed. Then, in the ophthalmologic apparatus 10, the anterior ocular segment observation optical system 32 turns on the anterior ocular segment illumination light source 32a and causes the display unit 14 to display an image of the anterior ocular segment (cornea Ec). In the ophthalmologic apparatus 10, as described above, the apparatus main body 13 is appropriately moved with respect to the base 11 automatically (automatic alignment mode) or manually (manual alignment mode), and an eye characteristic measuring unit for the eye E Alignment in 30 vertical directions (Y-axis direction), left-right direction (X-axis direction), and front-back direction (Z-axis direction) is performed.

  Then, in the ophthalmologic apparatus 10 (eye characteristic measuring unit 30), the light source 33a for the reflex measurement projection optical system 33 is turned on, and the pattern light flux of the ring-shaped index for eye refractive power measurement (reflective measurement) is used as the main light. Projection is performed on the fundus oculi Ef of the eye E with the axis O1. In the ophthalmologic apparatus 10 (eye characteristic measuring unit 30), the reflex measurement ring-shaped index reflected by the fundus oculi Ef is imaged on the image sensor 32g by the reflex measurement light receiving optical system 34. The imaging device 32g outputs an image signal based on the acquired image to the control unit 21 (see FIG. 2). The control unit 21 causes the display unit 14 (see FIG. 1) to display an image of the ring index for reflex measurement based on the input image signal. Then, in the control unit 21, based on the image displayed on the display unit 14 (image signal from the image sensor 32 g), the spherical power as the eye refractive power from the image of the ring index for reflex measurement projected onto the fundus oculi Ef. Measure cylinder power and shaft angle. The details of the measurement of the spherical power, the cylindrical power, and the shaft angle as the eye refractive power are well known and will not be described. Therefore, in the ophthalmologic apparatus 10, the reflex measurement projection optical system 33 functions as an eye characteristic measurement projection optical system that projects the measurement light toward the eye E, and the reflex measurement light receiving optical system 34 functions as the measurement eye E of the measurement light. It functions as an eye characteristic measurement light receiving optical system that receives reflected light from (the fundus oculi Ef).

  Further, in the ophthalmologic apparatus 10 (eye characteristic measuring unit 30), the keratring-shaped index projection light source 37 is turned on to project the keratling-shaped index onto the cornea Ec of the eye E to be examined along the main optical axis O1. Then, in the ophthalmologic apparatus 10 (eye characteristic measuring unit 30), the keratoling index reflected by the cornea Ec of the eye E is imaged on the image sensor 32g by the anterior ocular segment observation optical system 32. The imaging device 32g outputs an image signal based on the acquired image to the control unit 21 (see FIG. 2). The control unit 21 causes the display unit 14 (see FIG. 1) to display an image of the keratoling index based on the input image signal. Then, the control unit 21 measures the shape of the cornea Ec from the image of the kerato-ring index projected on the cornea Ec based on the image displayed on the display unit 14 (image signal from the imaging element 32g). Since the details of the measurement of the shape of the cornea Ec are known, the description thereof is omitted. For this reason, in the ophthalmologic apparatus 10, the kerato-ring type index projection light source 37 functions as an eye characteristic measurement projection optical system that projects the measurement light toward the eye E, and the anterior ocular segment observation optical system 32 receives the measurement light. It functions as an eye characteristic measurement light receiving optical system that receives reflected light from the optometry E.

  As described above, the control unit 21 performs measurement of the eye refractive power and measurement of the corneal shape. In addition, the control part 21 stores a calculation result etc. in a memory | storage part (illustration is abbreviate | omitted) suitably. Thereby, the ophthalmologic apparatus 10 can measure the eye refractive power (spherical power, astigmatism power, astigmatism axis angle, etc.) of the eye E and the shape of the cornea Ec of the eye E. In the ophthalmologic apparatus 10, the above-described operation is performed on both eyes of the subject, so that the eye refractive power (spherical power, astigmatism power, astigmatic axis angle, etc.) of both eyes and the shape of the cornea Ec are obtained. And can be measured. At this time, in the ophthalmologic apparatus 10, the above-described measurement of the eye E can be performed without covering the eye on the opposite side of the eye E to be examined by the subject or meditating the eye. it can.

  Next, a characteristic configuration of the ophthalmologic apparatus 10 of the present embodiment according to the present invention will be described with reference to FIGS. In this ophthalmologic apparatus 10 (eye characteristic measuring unit 30), under the control of the control unit 21, a bright spot image S as an XY alignment index image is formed by the XY alignment light projection optical system 35, and the bright spot image S By appropriately moving the apparatus main body 13 (eye characteristic measurement unit 30) in the XY direction so that the main optical axis O1 of the characteristic measurement unit 30 coincides, alignment in the XY direction is automatically performed. That is, in the ophthalmologic apparatus 10 (eye characteristic measuring unit 30), the eye characteristic measurement as an example of the eye characteristic measuring unit with the bright spot image S (XY alignment index image) formed by the XY alignment light projection optical system 35 as an alignment target. Automatic alignment in the XY directions in the auto alignment mode is performed by the alignment operation of moving the unit 30 (device main body unit 13).

  In the eye characteristic measurement unit 30, as described above, in the anterior segment observation optical system 32, an image of the anterior segment of the eye E (anterior segment image E ′) is formed on the image sensor 32g, A signal based on reception of the anterior segment image E ′ on which the image sensor 32g is formed is output to the control unit 21 (see FIG. 2). Thereby, in the eye characteristic measurement part 30, the image (the data) of the anterior eye part image E 'in which the bright spot image S was formed can be acquired. And since the control part 21 can display the image (the data) acquired with the image pick-up element 32g (anterior eye part observation optical system 32) on the display part 14 (refer FIG. 1), as shown in FIG. In addition, the anterior segment image E ′ on which the bright spot image S is formed can be displayed on the display unit 14. For this reason, in the eye characteristic measurement unit 30 of the present embodiment, the XY alignment light projection optical system 35 forms the bright spot image S by reflection from the cornea Ec on the inside of the eye E as an alignment target. It functions as a system and also functions as an alignment optical system that forms an alignment target on the image of the eye E. Further, in the eye characteristic measurement unit 30 of the present embodiment, the anterior ocular segment observation optical system 32 is an image of the anterior segment of the eye E (anterior segment image E ′) on which the bright spot image S as the alignment target is formed. ) Function as an observation optical system. The control unit 21 detects the position of the bright spot image S in the anterior segment image E ′ based on the image (the data) of the anterior segment image E ′, and sets the position as an alignment target.

  In this embodiment, the detection is performed by detecting, as the bright spot image S, a luminance distribution exceeding the detection threshold set to detect the bright spot image S in the image (data) of the anterior segment image E ′. By obtaining the position of the center of gravity of the location detected as the bright spot image S, the position of the bright spot image S is obtained. Since this bright spot image S is formed on an axis passing through the vertex (corneal vertex) in the cornea Ec of the eye E to be examined and the center of curvature, the bright spot image S on the XY plane is displayed. By obtaining the position, the apex of the cornea on the XY plane of the cornea Ec of the anterior eye portion can be detected. For this reason, the apparatus main body 13 (eye characteristic measuring unit 30) is appropriately moved in the XY directions so that the main optical axis O1 of the eye characteristic measuring unit 30 coincides with the corneal apex (position of the bright spot image S) (alignment operation). ), The eye characteristic measuring unit 30 can be accurately aligned (aligned) with the eye E as viewed in the XY direction (direction orthogonal to the main optical axis O1). Thus, an eye as an example of an eye characteristic measurement unit with the position of the bright spot image S in the image of the eye E (anterior eye image E ′) acquired by the anterior eye observation optical system 32 as a target (alignment target). Automatic alignment in the XY directions in the auto alignment mode is completed by automatically moving the characteristic measuring unit 30 (device main body unit 13).

  In the ophthalmologic apparatus 10 (eye characteristic measuring unit 30), the target position marking symbol 41 is displayed on the display unit 14 (overlaid on the image of the eye E (anterior eye image E ′) acquired by the anterior eye observation optical system 32. It is possible to display on the display surface 14a). The target position marking symbol 41 is a position to be moved (alignment target) on the image of the anterior segment image E ′ displayed on the display unit 14 (display surface 14a) when executing the auto alignment mode. It is possible to grasp this. In the present embodiment, the target position marking symbol 41 basically uses the bright spot image S as an alignment target in the auto alignment mode, and therefore surrounds the bright spot image S (alignment target) at a small interval. It has a rectangular shape. Here, basically, the target of the bright spot image S is that a bright spot different from the bright spot image S may be erroneously detected as a bright spot image. This is because the target (alignment target) may be obtained. The control unit 21 matches the position of the set alignment target (detected bright spot image S) on the image of the anterior segment image E ′ displayed on the display unit 14 (the display surface 14a) to indicate the target position. The symbol 41 is displayed. For this reason, the target position marking symbol 41 grasps the target position (alignment target) in the XY direction in the alignment operation with respect to the anterior segment image E ′, that is, in the direction orthogonal to the main optical axis O1 of the eye characteristic measuring unit 30. Can be made possible.

  Further, in the ophthalmologic apparatus 10, in the auto alignment mode, an auxiliary operation for assisting appropriate setting of a target position (alignment target) for automatically moving the eye characteristic measurement unit 30 (apparatus main body unit 13) in the XY directions is performed. It is possible to do. This auxiliary operation is performed in order to enable appropriate detection of the alignment target position in the anterior segment image E ′ of the display surface 14a of the display unit 14, that is, to perform automatic alignment appropriately. A position (movement target position) that is a target of movement of the measurement unit 30 (apparatus main body unit 13) is set. In other words, the auxiliary operation moves the eye characteristic measurement unit 30 (device main body unit 13) with respect to the eye E to a position where the bright spot image S (the position) as the alignment target can be appropriately detected. Is to encourage. When the auxiliary operation is performed, the control unit 21 performs the alignment operation when the alignment operation targeting the detected alignment target (the bright spot image S or a different bright spot in the present embodiment) is performed. The operation is interrupted, and the eye characteristic measurement unit 30 (device main body unit 13) is automatically moved in the XY directions with the movement target position set by the auxiliary operation as a target. That is, the control unit 21 prioritizes the movement of the eye characteristic measurement unit 30 (device main body unit 13) in the XY directions according to the auxiliary operation over the alignment operation targeting the alignment target.

  In the present embodiment, as this auxiliary operation, the position of the target position marking symbol 41 displayed superimposed on the anterior segment image E ′ on the display surface 14a of the display section 14 is moved, and the moved target position marking symbol is displayed. 41, it is possible to set the movement target position. This position can be moved within the range where the anterior segment image E ′ is displayed on the display surface 14a, and in the example shown in FIG. 5 and the like, it can be within the image display area 14b where the anterior segment image E ′ is displayed. And The position is moved by touching the target position marking symbol 41 displayed on the display surface 14a and sliding the display surface 14a to another position while maintaining the state of touching the display surface 14a. To do. The movement of the position of the target position marking symbol 41 on the display surface 14a may be performed by other methods, and is not limited to the configuration of the present embodiment. In this case, the control unit 21 automatically moves the eye characteristic measurement unit 30 (device main body unit 13) in the XY directions with the target position (movement target position) where the moved target position marking symbol 41 exists as a target. The position of the bright spot image (S) is detected to set the alignment target.

  Further, as an auxiliary operation, it is possible to set a movement target position by designating an arbitrary position on the display surface 14a of the display unit 14. This arbitrary position can be specified within the range where the anterior segment image E ′ is displayed on the display surface 14a. In the example shown in FIG. 5 and the like, the image is displayed in the image display area 14b where the anterior segment image E ′ is displayed. It is possible with. The arbitrary position is specified by touching an arbitrary position on the display surface 14a on which the anterior segment image E ′ is displayed. The designation of an arbitrary position on the display surface 14a may be performed by another method, and is not limited to the configuration of the present embodiment. In this case, the control unit 21 automatically moves the eye characteristic measurement unit 30 (device main body unit 13) in the XY directions with the designated position (movement target position) as a target, and sets a bright spot to set the alignment target. The position of the image (S) is detected.

  Next, an alignment measurement control process as an example performed in the measurement by the eye characteristic measurement unit 30 executed in the control unit 21 will be described with reference to FIG. FIG. 7 is a flowchart showing an alignment measurement control process (alignment measurement control method) executed by the control unit 21 in this embodiment. This alignment measurement control process (alignment measurement control method) displays the target position marking symbol 41 in the automatic alignment mode and performs an operation according to the auxiliary operation performed. The alignment measurement control process (alignment measurement control method) is executed by the control unit 21 based on a program stored in the storage unit 21 a built in the control unit 21 or a storage unit provided outside the control unit 21. The alignment measurement control process (alignment measurement control method) basically executes the auto alignment mode and measures the optical characteristics (eye characteristics) of the eye E. Below, each step (each process) of the flowchart of FIG. 7 as this alignment measurement control process (alignment measurement control method) is demonstrated. This flowchart is started when an operation to execute the measurement by the eye characteristic measurement unit 30 in the auto alignment mode is performed.

  In step S1, it is determined whether or not the alignment target has been set. If Yes, the process proceeds to step S2. If No, the process proceeds to step S4. In this step S1, a bright spot image (bright spot image S) is detected by the method described above, and the bright spot image on the image of the anterior segment image E ′ displayed on the display unit 14 (display surface 14a) ( The position of the bright spot image S) is detected, and the position is set as an alignment target. Here, the bright spot image (bright spot image S) can be detected even if the XY alignment light projection optical system 35 projects the XY alignment index light beam onto the cornea Ec of the eye E as will be described later. It may not be possible. In this case, the alignment target cannot be set. For this reason, in step S1, when the detected bright spot image (bright spot image S (including other bright spots)) (its position) is set as the alignment target, it is determined that the alignment target has been set, When the bright spot image (bright spot image S) cannot be detected, it is determined that the alignment target cannot be set. Further, in this step S1, when the step S12 is passed, that is, when the auxiliary operation is performed in the step S4 or the step S9 after starting the alignment operation first, a plurality of bright points are displayed on the bright spot image ( When detected as the bright spot image S), the position of the bright spot image (bright spot image S) closest to the movement target position set by the auxiliary operation is set as the alignment target.

  In step S2, following the determination that the bright spot image has been detected in step S1, the target position marking symbol 41 is displayed, and the process proceeds to step S3. In step S2, the target position marking symbol 41 is displayed so as to overlap the anterior segment image E ′ (that image) so as to coincide with the alignment target (bright spot image (bright spot image S)) set in step S1. In this alignment measurement control process, when the automatic alignment operation targeting the position indicated by the target position marking symbol 41, that is, the position of the alignment target set in step S1, is completed, the target position marking symbol 41 Stop display.

  In step S3, following the display of the target position marking symbol 41 in step S2, an alignment operation is started, and the process proceeds to step S4. In step S3, an automatic alignment operation with the position of the alignment target (bright spot image (bright spot image S)) set in step S1 as a target is started. In other words, in step S3, the apparatus main body 13 (eye characteristic measurement unit 30) is started to move in the XY directions with the position where the target position marking symbol 41 is matched in step S2 as an alignment target.

  In step S4, following the determination that the bright spot image is not detected in step S1, the alignment operation in step S3 is started, or the alignment operation in step S7 is not completed. Then, it is determined whether or not an auxiliary operation has been performed. If Yes, the process proceeds to Step S12. If No, the process proceeds to Step S5. In step S4, it is determined whether or not an auxiliary operation has been performed according to an auxiliary operation determination control process (see the flowchart of FIG. 8) described later. In step S4, when an auxiliary operation is performed, the process proceeds to step S12 to move the apparatus main body 13 (eye characteristic measurement unit 30) with the movement target position set by the auxiliary operation as a target. Moreover, in step S4, when auxiliary operation is not performed, it progresses to step S5.

  In step S5, following the determination that the auxiliary operation has not been performed in step S4, it is determined whether or not the alignment is properly performed. If yes, the process proceeds to step S6. If no, the process proceeds to step S7. move on. In step S5, it is determined whether or not the eye characteristic measurement unit 30 (device main body unit 13) has an appropriate positional relationship with the eye E by an automatic alignment operation with respect to the alignment target. In this embodiment, by receiving a signal indicating that the amount of deviation is within the allowable range from the alignment determination circuit 23, the position of the eye characteristic measurement unit 30 (device main body unit 13) with respect to the eye E in the XY directions is appropriate. Judge that it was a bad thing. In this embodiment, the eye characteristic measuring unit 30 (apparatus for the eye E in the Z-axis direction (front-rear direction) is obtained by executing Z-alignment and receiving a signal indicating the completion of focusing from the focusing determination circuit 22. It is determined that the position of the main body 13) has become appropriate. In this embodiment, when an automatic alignment operation is performed with respect to the alignment target, a signal indicating that the deviation amount is within the allowable range cannot be received from the alignment determination circuit 23, or Z alignment is executed. However, if a signal indicating the completion of focusing is not received from the focusing determination circuit 22 or if the target position cannot be detected, the positional relationship is not appropriate (alignment is not properly performed). Judgment is not done).

  In step S6, following the determination that the alignment in step S5 has been properly performed, the optical characteristic (eye characteristic) of the eye E is measured, and the alignment measurement control process ends. In step S6, as described above, using the eye characteristic measurement unit 30, the eye refractive power (spherical power, astigmatism power, astigmatism axis angle, etc.) of the eye E, the shape of the cornea Ec of the eye E, Is measured, and the alignment measurement control process is terminated.

  In step S7, following the determination that the alignment is not properly performed in step S5, it is determined whether or not the alignment operation is completed. If Yes, the process proceeds to step S8, and if No, the process proceeds to step S4. Return. In step S7, whether the alignment operation started in step S3 is completed, that is, the position of the alignment target (bright spot image (bright spot image S)) set in step S1 is the target device body 13 (eye). It is determined whether or not the movement of the characteristic measuring unit 30) in the XY directions is finished. In step S7, it is determined whether or not a predetermined time has elapsed since the start of the alignment operation in step S3. If not, it is determined that the alignment operation has not ended. If it has elapsed, it is determined that the alignment operation has been completed. This is because the alignment operation may not be completed even when a sufficient time has elapsed for the movement of the apparatus main body 13 (eye characteristic measurement unit 30) to the alignment target in the XY directions. Such a case may be, for example, a case where a plurality of bright spot images are detected as bright spot images and one of the plurality of bright spot images is determined as an alignment target. For this reason, the predetermined time in step S7 is set to a time sufficient for the movement of the apparatus main body 13 (eye characteristic measurement unit 30) to the alignment target in the X and Y directions. In step S7, if the alignment operation is not completed, the process returns to step S4 to repeat step S4 to step S5. This is because, when the alignment operation is not completed, the alignment operation may be continued appropriately, and an auxiliary operation is performed when the alignment operation is continued. And there is a possibility of switching to the manual alignment mode. In step S7, when the alignment target cannot be set in step S1, it may be determined that the alignment operation has ended without waiting for the elapse of the predetermined time in step S7.

  In step S8, following the determination that the alignment operation has been completed in step S7, an alignment error is notified, and the process proceeds to step S9. In step S8, automatic alignment cannot be performed properly because the eye characteristic measurement unit 30 (device main body unit 13) does not have an appropriate positional relationship with the eye E in spite of performing the alignment operation. A notification to the effect is given. In this embodiment, this notification is performed by displaying that fact on the display surface 14a of the display unit 14. The notification of the alignment error is not limited to the configuration of the present embodiment as long as it allows the examiner to recognize that automatic alignment has not been properly performed.

  In step S9, following the notification of the alignment error in step S8 or the determination that the predetermined time has not elapsed in step S10, it is determined whether or not an auxiliary operation has been performed. In the case of No, the process proceeds to Step S11, and in the case of No, the process proceeds to Step S10. In step S9, it is determined whether or not an auxiliary operation has been performed in accordance with a flowchart of an auxiliary operation determination control process shown in FIG. In step S9, if an auxiliary operation is performed, the process proceeds to step S11 to move the apparatus main body 13 (eye characteristic measurement unit 30) with the movement target position set by the auxiliary operation as a target. In step S9, if the auxiliary operation is not performed, the process proceeds to step S10.

  In step S10, following the determination that the auxiliary operation has not been performed in step S9, it is determined whether or not a predetermined time has elapsed. If yes, the alignment measurement control process is terminated. Return to step S9. In step S10, it is determined whether or not a predetermined time has elapsed from the time when the alignment error was notified in step S8. If not, the process returns to step S9 to repeat step S9. This is because step S9 determines whether or not any operation has been performed in order to enable automatic alignment appropriately in response to the notification of the alignment error in step S8. For this reason, the predetermined time in step S10 is set to a time sufficient for the operation for responding to the notification.

  In step S11, following the determination that the auxiliary operation has been performed in step S9, the notification of the alignment error is stopped, and the process proceeds to step S12. In this step S11, since the auxiliary operation is performed so that automatic alignment is appropriately performed in response to the notification of the alignment error, the notification of the alignment error is stopped and the movement target position set in the auxiliary operation is determined. The process proceeds to step S12 to move the apparatus main body 13 (eye characteristic measurement unit 30) as a target.

  In step S12, following the determination that the auxiliary operation in step S4 has been performed or the notification of the alignment error in step S11 is stopped, the apparatus body 13 is moved in accordance with the auxiliary operation, and step S1 is performed. Return to. In step S12, the apparatus main body 13 (eye characteristic measuring unit 30) is moved with the movement target position set by the auxiliary operation performed in step S4 or step S9 as a target. In the present embodiment, in step S12, when the position of the target position marking symbol 41 is moved, the apparatus main body 13 (eye) is set with the position (moving target position) where the moved target position marking symbol 41 exists as a target. The position of the bright spot image (S) is detected so as to set the alignment target while automatically moving the characteristic measuring unit 30) in the XY directions. In step S12, when an arbitrary position on the display surface 14a is designated, the apparatus main body 13 (eye characteristic measurement unit 30) is automatically moved in the XY directions with the designated position (movement target position) as a target. The position of the bright spot image (S) is detected in order to set the alignment target while moving the image.

  Next, auxiliary operation determination control processing (auxiliary operation determination) for determining whether or not the auxiliary operation in steps S4 and S9 in the flowchart of FIG. 7 as the alignment measurement control processing (alignment measurement control method) described above has been performed. The control method will be described with reference to FIG. FIG. 8 is a flowchart showing auxiliary operation determination control processing (auxiliary operation determination control method) executed by the control unit 21 in this embodiment. Below, each step (each process) of the flowchart of FIG. 8 as this auxiliary | assistant operation determination control process (auxiliary operation determination control method) is demonstrated.

  In step S21, it is determined whether or not the display surface 14a has been touched. If Yes, the process proceeds to step S22. If No, the process proceeds to step S26. In this auxiliary operation determination control process (auxiliary operation determination control method), when the auto alignment mode is executed, the display surface 14a (this embodiment) displays an image such as the anterior segment (anterior segment image E ′). Then, touching the image display area 14b) is used as a signal for starting the auxiliary operation determination control process, that is, for performing an auxiliary operation. For this reason, in step S21, it is determined whether or not a signal (cue) for performing an auxiliary operation has been made by determining whether or not the display surface 14a (image display area 14b) has been touched (tapped). Judging. In this step S21, it is determined whether or not the display surface 14a (image display area 14b) has been touched (tapped), and if touched, a signal (cue) for performing an auxiliary operation has been made. Therefore, the process proceeds to step S22, and if it is not touched, the signal (cut) is not made, and the process proceeds to step S26.

  In step S22, following the determination that the display surface 14a has been touched in step S21, the operation in the auto alignment mode is interrupted, and the process proceeds to step S23. In step S22, the operation in the auto alignment mode performed when the process proceeds to step S22 is interrupted. That is, the automatic alignment operation started in step S3 is interrupted in the above-described step S4, and the alignment error notification is interrupted in the above-described step S9. This is because it is difficult to properly perform the auxiliary operation by the alignment operation when the automatic alignment operation is started, and according to the alignment error in the case where the alignment error is notified. This is because when the notification is continued even though the operation is started, the user feels uncomfortable. For this reason, in step S22, since it is determined that the signal for performing the auxiliary operation has been made in step S21, the operation in the auto alignment mode is interrupted to wait (wait) for the auxiliary operation to be performed. To do.

  In step S23, following the determination that the operation in the auto alignment mode in step S22 is interrupted or that the predetermined time has not elapsed in step S25, whether or not an arbitrary position on the display surface 14a has been designated. If yes, the process proceeds to step S27. If no, the process proceeds to step S24. In step S23, aside from step S22, it is determined whether or not an arbitrary position on the display surface 14a (the image display area 14b) on which the anterior segment image E ′ is displayed has been touched.

  In step S24, following the determination that an arbitrary position on the display surface 14a is not specified in step S23, it is determined whether or not the position of the target position marking symbol 41 has been moved. If Yes, the process proceeds to step S27. If No, go to Step S25. In this step S24, it is determined whether or not the target position marking symbol 41 displayed on the display surface 14a (the image display area 14b) so as to overlap the anterior segment image E ′ has been moved.

  In step S25, following the determination that the position of the target position indicating symbol 41 has not been moved in step S24, it is determined whether or not a predetermined time has elapsed. If the result is Yes, the process proceeds to step S26. In this case, the process returns to step S23. In step S25, it is determined whether or not a predetermined time has elapsed since the display surface 14a (image display area 14b) was touched in step S21. The predetermined time in step S25 is set to a time sufficient to perform an auxiliary operation after the display surface 14a (image display area 14b) is touched. For this reason, in step S25, it is determined whether or not the touch on the display surface 14a (image display area 14b) in step S21 was performed to perform an auxiliary operation.

  In step S26, following the determination that the display surface 14a is not touched in step S21 or the determination that the predetermined time has elapsed in step S25, it is determined that no auxiliary operation has been performed. Then, the auxiliary operation determination control process ends. In this step S26, when the display surface 14a (image display area 14b) is not touched in step S21, the auxiliary operation is not performed because a signal for performing the auxiliary operation has not been made. Judge. In step S26, when the display surface 14a (image display area 14b) is touched in step S21, an arbitrary position on the display surface 14a (image display area 14b) is not designated thereafter, and the target position Since a predetermined time has passed without the position of the sign symbol 41 being moved, it is determined that no auxiliary operation has been performed. If it is determined in step S26 that the auxiliary operation is not performed, the operation in the auto alignment mode interrupted in step S22 is resumed, and the auxiliary operation determination control process is terminated.

  In step S27, following the determination that an arbitrary position on the display surface 14a has been designated in step S23, or the determination that the position of the target position marking symbol 41 has been moved in step S24, an auxiliary operation has been performed. This auxiliary operation determination control process is terminated. In step S27, after the display surface 14a (image display area 14b) is touched in step S21, an arbitrary position on the display surface 14a (image display area 14b) is designated, or the position of the target position marking symbol 41 is determined. Since it has been moved, it is determined that an auxiliary operation has been performed. In step S27, if it is determined that an auxiliary operation has been performed, an arbitrary position on the designated display surface 14a (image display area 14b) or a position indicated by the moved target position indication symbol 41 is moved. It is memorized as a target position.

  Thereby, in step S4 and step S9 of the flowchart of FIG. 7 as the alignment measurement control process (alignment measurement control method) described above, the position of the target position indicating symbol 41 is moved when step S2 and step S3 are passed. If an arbitrary position on the display surface 14a is designated, it is determined that an auxiliary operation has been performed. In steps S4 and S9, if step S2 and step S3 have not been performed, if an arbitrary position on the display surface 14a is designated, it is determined that an auxiliary operation has been performed. Then, in step S4 and step S9, if the movement of the position of the target position marking symbol 41 and the designation of an arbitrary position on the display surface 14a are not specified, it is determined that no auxiliary operation has been performed.

  Next, the manual measurement control process (manual measurement) when the automatic alignment mode is switched to the manual alignment mode while the flowchart of FIG. 7 as the alignment measurement control process (alignment measurement control method) described above is being executed. The control method will be described with reference to FIG. FIG. 9 is a flowchart showing a manual measurement control process (manual measurement control method) executed by the control unit 21 in this embodiment. Below, each step (each process) of the flowchart of FIG. 9 as this manual measurement control process (manual measurement control method) is demonstrated. This flowchart is started by switching from the auto alignment mode performed there to the manual alignment mode when the flowchart of FIG. 7 is being executed. This switching is possible at any timing as long as the flowchart of FIG. 7 is being executed. In the present embodiment, the manual / auto switching button B9 (see FIG. 5 and the like) displayed on the display surface 14a is switched to the manual alignment mode.

  In step S31, the operation in the auto alignment mode is stopped, and the process proceeds to step S32. In step S31, when the automatic alignment operation started in step S3 described above is performed, the automatic alignment operation is stopped. In step S31, if the target position marking symbol 41 is displayed on the display surface 14a (image display area 14b) and superimposed on the anterior segment image E ′ (that image) in step S2 described above, the target position indicating symbol 41 is displayed. The display of the position sign symbol 41 is stopped. Further, in step S31, when the alignment error is notified in step S8 described above, the notification of the alignment error is stopped. Next, in step S31, if the movement to the movement target position set by the auxiliary operation of the apparatus main body 13 is performed in step S12 described above, the movement of the apparatus main body 13 is stopped.

  In step S32, following the determination that the operation in the auto-alignment mode in step S31 is stopped or that the operation for executing the measurement in step S33 is not performed, the movement according to the manual operation is performed. Proceed to step S33. In step S <b> 32, the apparatus main body 13 is moved in response to a manual operation for moving the apparatus main body 13. In this embodiment, in this embodiment, an arbitrary part is touched (tapped) in the image on the display surface 14a of the display unit 14, and the apparatus main body part 13 is moved to the touched part (tap position). Is done. In this embodiment, the manual operation is performed by operating the manual operation symbol (moving button) displayed on the display surface 14a and moving the apparatus main body 13 in accordance with the operation. Is called.

  In step S33, following the movement according to the manual operation in step S32, it is determined whether or not an operation for executing measurement has been performed. If Yes, the process proceeds to step S34, and if No, the process returns to step S32. In this step S33, it is determined whether or not an operation for measuring the optical characteristics (eye characteristics) of the eye E has been performed by the apparatus main body 13 at the position moved by the manual operation, that is, the eye characteristics measuring section 30. To do. In step S33, in this embodiment, it is determined whether or not an operation for performing measurement is performed on the start button B8 (see FIG. 5 and the like).

  In step S34, following the determination that the operation for performing the measurement in step S33 has been performed, the optical characteristic (eye characteristic) of the eye E is measured, and the manual measurement control process ends. In step S34, as described above, using the eye characteristic measurement unit 30, the eye refractive power (spherical power, astigmatism power, astigmatism axis angle, etc.) of the eye E, the shape of the cornea Ec of the eye E, Is measured and the manual measurement control process is terminated.

  Next, in the ophthalmologic apparatus 10, the operation when the optical characteristic (eye characteristic) of the eye E to be examined is measured in the auto alignment mode by the eye characteristic measurement unit 30 in addition to FIGS. 14 will be described. FIGS. 5, 6, and 10 to 14 are created to facilitate the understanding of the operation, and do not necessarily coincide with the state when the operation is actually performed. In the following description, the display of the focus determination symbol 42 (see FIG. 6) is omitted in order to facilitate understanding of the operation, but it is not covered on the main optical axis O1 of the eye characteristic measurement unit 30. When the interval between the eye E to be examined and the apparatus main body 13 (eye characteristic measurement unit 30) is within the detectable range in the state where the eye E is located, the focus determination symbol 42 is also displayed on the display surface 14a. For this reason, the examiner can grasp the amount of deviation in the front-rear direction (Z-axis direction) and its direction by checking the focus determination symbol 42 in addition to the target position marking symbol 41.

  First, in the state shown in FIG. 10, the XY alignment light projection optical system 35 can appropriately detect the bright spot image S formed by projecting the XY alignment index light beam toward the cornea Ec of the eye E, that is, alignment. The case where it can set appropriately with a target is explained. In this case, in the flowchart of FIG. 7, by proceeding to step S1, the bright spot image S and its position are appropriately detected, and the position is set as an alignment target. Then, in the flowchart of FIG. 7, by proceeding to step S <b> 2, the alignment target (detected bright spot image S) (on the image of the anterior segment image E ′ displayed on the display unit 14 (the display surface 14 a)) The target position marking symbol 41 is displayed in accordance with the position). Therefore, the examiner confirms the position of the target position marking symbol 41 on the display unit 14 (the display surface 14a), and automatically aligns the bright spot image S formed at the corneal apex of the eye E to be examined as an alignment target. Can be understood. From this, the examiner waits for the measurement to be performed without performing any operation. Then, in the flowchart of FIG. 7, the alignment is automatically performed appropriately by proceeding from step S3 to step S4 to step S5 (see FIG. 5). Thereafter, by proceeding to step S6 in the flowchart of FIG. 7, the eye characteristic measuring unit 30 is used to use the eye refractive power (spherical power, astigmatism power, astigmatic axis angle, etc.) of the eye E and the cornea of the eye E to be examined. The shape of Ec is measured.

  Next, in the state shown in FIG. 11, when the XY alignment light projection optical system 35 cannot properly detect the bright spot image S formed by projecting the XY alignment index light beam onto the cornea Ec of the eye E, that is, The case where it cannot set appropriately with an alignment target is demonstrated. FIG. 11 shows an example in which a glossy object 43 such as a makeup lame attached obliquely below the eye E is detected as a bright spot image. In this case, in the flowchart of FIG. 7, by proceeding to step S1, the glossy object 43 and its position are detected as a bright spot image, and the position is set as an alignment target. Then, in the flowchart of FIG. 7, by proceeding to step S <b> 2, it matches the glossy object 43 (the position) detected on the image of the anterior segment image E ′ displayed on the display unit 14 (the display surface 14 a). The target position sign symbol 41 is displayed. Therefore, the examiner confirms that the automatic alignment is performed with the wrong position (glossy object 43) as a target by confirming the position of the target position marking symbol 41 on the display unit 14 (the display surface 14a). be able to. As a result, the examiner performs the automatic alignment as soon as the movement of the apparatus main body 13 (eye characteristic measurement unit 30) targeting the glossy object 43 is started, that is, before the automatic alignment operation ends. You can figure out what's not going on. From this, the examiner cannot properly perform automatic alignment in order to appropriately measure the eye refractive power of the eye E and the shape of the cornea Ec of the eye E using the eye characteristic measuring unit 30. Can be handled immediately.

  Here, as shown in FIG. 12, the examiner assumes that the bright spot image S is appropriately detected in the eye E, and moves the position of the target position marking symbol 41 to a position that matches the bright spot image S. Assume that an auxiliary operation (see an arrow from the target position marking symbol 41 indicated by a broken line to the target position marking symbol 41 indicated by a solid line) is performed. In other words, the examiner moves the position of the target position marking symbol 41 to the bright spot image S (the vicinity thereof) after touching (tapping) the display surface 14a (the image display area 14b). Then, in the flowchart of FIG. 7, the auxiliary operation is performed while the process of step S4 → step S5 → step S7 → step S4 is repeated, so in the flowchart of FIG. The automatic alignment operation is interrupted by proceeding to step S23, and the process proceeds from step S23 to step S24 to step S27, whereby it is determined that an auxiliary operation has been performed in step S4. Then, in the flowchart of FIG. 7, by proceeding from step S4 to step S12 to step S1, the apparatus main body 13 (eye characteristic measurement) with the position (moving target position) where the moved target position marking symbol 41 exists as a target The position of the bright spot image (alignment target) is detected while the unit 30) is automatically moved in the XY directions. Here, on the image of the anterior segment image E ′, there are two bright spots, the bright spot image S and the glossy object 43. In step S1 of the flowchart of FIG. In this case, the bright spot image (bright spot image S) closest to the movement target position set by the auxiliary operation is set as the alignment target. Thereby, the bright spot image S closest to the movement target position (position where the target position marking symbol 41 is present) is set as the alignment target, that is, the glossy object 43 (other bright spots) can be ignored. From this, in the flowchart of FIG. 7, the process proceeds to step S2 to set the alignment target (bright spot image S ((bright spot image S ( The target position marking symbol 41 is displayed in accordance with the position)) (see FIG. 10). Therefore, as described above, the examiner does nothing after that, using the eye characteristic measuring unit 30, the eye refractive power of the eye E (spherical power, astigmatism power, astigmatic axis angle, etc.) The shape of the cornea Ec of the optometer E is measured.

  Further, as shown in FIG. 13, the examiner designates the center of the cornea (the vicinity thereof) in the anterior segment image E ′ as the designated position 44 on the assumption that the bright spot image S is appropriately detected in the eye E. It is assumed that the auxiliary operation is performed (in FIG. 13, the position of the bright spot image S is designated). That is, the examiner touches (tap) the bright spot image S (the vicinity thereof) after touching (tapping) the display surface 14a (image display area 14b). Then, in the flowchart of FIG. 7, the auxiliary operation is performed while the process of step S4 → step S5 → step S7 → step S4 is repeated, and in the flowchart of FIG. 8, the process proceeds to step S21 → step S22. As a result, the automatic alignment operation is interrupted, and the process proceeds from step S23 to step S27, whereby it is determined that an auxiliary operation has been performed in step S4. In the flowchart of FIG. 7, the process proceeds from step S4 to step S12 to step S1, and the apparatus main body 13 (eye characteristic measuring unit 30) is moved in the XY direction with the designated designated position 44 (movement target position) as a target. The position of the bright spot image (alignment target) is detected while being automatically moved to. Here, on the image of the anterior segment image E ′, there are two bright spots, the bright spot image S and the glossy object 43. In step S1 of the flowchart of FIG. In this case, the bright spot image (bright spot image S) closest to the movement target position set by the auxiliary operation is set as the alignment target. Thereby, the bright spot image S closest to the movement target position (position where the target position marking symbol 41 is present) is set as the alignment target, that is, the glossy object 43 (other bright spots) can be ignored. Accordingly, in the flowchart of FIG. 7, by proceeding to step S2, the alignment target (bright spot image S) set on the image of the anterior segment image E ′ displayed on the display unit 14 (display surface 14a) is displayed. (The position)), the target position marking symbol 41 is displayed (see FIG. 10). As a result, as described above, the examiner does nothing after that, using the eye characteristic measurement unit 30, the eye refractive power of the eye E (spherical power, astigmatism power, astigmatic axis angle, etc.) The shape of the cornea Ec of the optometer E is measured.

  Here, if the alignment target is not properly set because the bright spot image S is not properly detected even if the apparatus main body 13 (eye characteristic measuring unit 30) is moved by the above-described auxiliary operation, the examiner The manual / auto switching button B9 (see FIG. 5 and the like) can be operated to switch to the manual alignment mode. The determination that the bright spot image S is not properly detected is that even after the auxiliary operation, the target position marking symbol 41 is not displayed in accordance with the bright spot image S (its position) after the auxiliary operation. Even when the target position marking symbol 41 is displayed so as to coincide with the bright spot image S (its position), the state does not continue (for example, the bright spot image S and other bright spots (in this example, a glossy object). 43) and the like. In this case, when the examiner switches to the manual alignment mode with the manual / auto switching button B9 (see FIG. 5 and the like), the process proceeds from step S31 to step S32 in the flowchart of FIG. The apparatus main body 13 (eye characteristic measurement unit 30) can be moved to (for example, the designated position 44 in FIG. 13). At this time, since the operation in the auto alignment mode is stopped in step S31, the display of the target position indicating symbol 41 indicating the inappropriate alignment target is stopped and the alignment target (target position indicating symbol 41) is stopped. The automatic alignment operation with the target (the position where is displayed) is stopped. Then, when the examiner operates the start button B8 (see FIG. 5 and the like), the process proceeds from step S33 to step S34 in the flowchart of FIG. 9, so that the eye characteristic measurement unit 30 is moved to an arbitrary position moved by manual operation. Are used to measure the eye refractive power (spherical power, astigmatism power, astigmatism axis angle, etc.) of the eye E and the shape of the cornea Ec of the eye E. This is the same even when switching to the manual alignment mode without performing an auxiliary operation from the state shown in FIG.

  Next, in the state shown in FIG. 14, a case where the bright spot image S (alignment target) cannot be formed even if the XY alignment light projection optical system 35 projects the XY alignment index light beam onto the cornea Ec of the eye E to be examined. To do. The reason why the bright spot image S is not formed is, for example, an eye characteristic measuring unit 30 (XY alignment light projection optical system 35) for the eye E, such as when the anterior segment image E ′ does not exist on the display surface 14a. ) Is not appropriate, or the eye E is subject to eyelashes or eyelashes, so that the XY alignment index light beam from the XY alignment light projection optical system 35 is appropriately projected onto the cornea Ec of the eye E. It is thought that it is not. Moreover, as a cause that the bright spot image S is not formed, for example, the cornea Ec of the eye E to be examined may be different from a normal shape.

  In this case, since the bright spot image cannot be detected, the alignment target cannot be set and the target position marking symbol 41 cannot be displayed. Therefore, the process proceeds from step S1 to step S4 in the flowchart of FIG. As a result, only the image of the anterior segment image E ′ is displayed on the display unit 14 (the display surface 14a). For this reason, the examiner can grasp that the automatic alignment is not appropriately performed by confirming that the target position marking symbol 41 is not displayed on the display unit 14 (the display surface 14a). In addition, the examiner confirms that the bright spot image S is not displayed on the display unit 14 (the display surface 14a), so that the target position marking symbol 41 is displayed because the bright spot image S is not formed. It can also be confirmed that this is not done. From this, the examiner cannot properly perform automatic alignment in order to appropriately measure the eye refractive power of the eye E and the shape of the cornea Ec of the eye E using the eye characteristic measuring unit 30. Can be handled immediately.

  In this case, when performing an auxiliary operation, the examiner designates an arbitrary position because the target position marking symbol 41 is not displayed. Here, it is assumed that the cornea center (the vicinity thereof) in the anterior segment image E ′ is designated as the designated position 45. That is, the examiner touches (tap) the display surface 14a (image display area 14b) and then touches (tap) the center of the cornea (the vicinity thereof) in the anterior segment image E ′. Then, in the flowchart of FIG. 7, by proceeding from step S3 → step S4 → step S12 → step S1, the apparatus main body 13 (eye characteristic measurement unit 30) with the designated designated position 45 (movement target position) as a target. The position of the bright spot image (S) is detected while automatically moving in the XY direction. Here, for example, due to the positional relationship of the eye characteristic measuring unit 30 (XY alignment light projection optical system 35) with respect to the eye E, the XY alignment index light beam from the XY alignment light projection optical system 35 is reflected by the eye E. When the bright spot image S is not formed because it is not properly projected onto the cornea Ec, the apparatus main body 13 (eye characteristic measurement unit 30) is moved with the designated position 45 (movement target position) as a target. As a result, it is conceivable that the cause that the bright spot image S is not formed is eliminated. When the bright spot image S is formed, the bright spot image S is appropriately detected, and the alignment target is appropriately set, the process proceeds to step S2 in the flowchart of FIG. The target position marking symbol 41 is displayed in accordance with the bright spot image S (its position) detected on the image of the anterior segment image E ′ displayed on the display surface 14a) (see FIG. 10). As a result, as described above, the examiner does nothing after that, using the eye characteristic measurement unit 30, the eye refractive power of the eye E (spherical power, astigmatism power, astigmatic axis angle, etc.) The shape of the cornea Ec of the optometer E is measured.

  Further, for example, because the eye E is subject to eyelashes or eyelashes, the XY alignment index light beam from the XY alignment light projection optical system 35 is not appropriately projected onto the cornea Ec of the eye E, and thus the bright spot If the image S is not formed, it can be considered that the cause of the bright spot image S not being formed can be eliminated by opening the eyelids so that the eyelashes are not applied. In this case, the auxiliary operation may be performed as appropriate. Even in this case, by confirming only the anterior segment image E ′ displayed on the display unit 14 (the display surface 14a), the eye E is covered with eyelashes or eyelashes. Thus, it can be understood that the target position marking symbol 41 is not displayed, that is, that the bright spot image S (alignment target) has not been detected.

  Furthermore, it is conceivable that the bright spot image S is not formed, for example, that the cornea Ec of the eye E is different from the normal shape. In this case, even if the apparatus main body 13 (eye characteristic measurement unit 30) is moved with the designated position 45 (movement target position) as a target, the cause that the bright spot image S is not formed is not solved. For this reason, since the bright spot image cannot be detected, the alignment target cannot be set and the target position marking symbol 41 cannot be displayed. Therefore, in the flowchart of FIG. 7, go to step S12 → step S1 → step S4. As a result, only the image of the anterior segment image E ′ remains displayed on the display unit 14 (the display surface 14a). In this case, the examiner can switch to the manual alignment mode by operating the manual / auto switching button B9 (see FIG. 5 and the like). Then, in the flowchart of FIG. 9, by proceeding from step S31 to step S32, the examiner manually moves the apparatus main body 13 (eye characteristic measurement unit 30 to the specified position 44 in FIG. 13) to an arbitrary position (for example, the designated position 44 in FIG. 13). ) Can be moved. Then, when the examiner operates the start button B8 (see FIG. 5 and the like), the process proceeds from step S33 to step S34 in the flowchart of FIG. 9, so that the eye characteristic measurement unit 30 is moved to an arbitrary position moved by manual operation. Are used to measure the eye refractive power of the eye E and the shape of the cornea Ec of the eye E. This is the same even when the mode is switched to the manual alignment mode without performing the auxiliary operation.

  In each of the above-described situations, the examiner took a response according to the situation immediately after confirming the target position marking symbol 41 on the display unit 14 (the display surface 14a). However, when the bright spot image S is not properly detected (see FIG. 11) or when the bright spot image S is not formed (see FIG. 14), neither the auxiliary operation nor the switching to the manual alignment mode is performed. In the flowchart of FIG. 7, the process of step S1, step S2, step S3, step S4 (or step S1, step S4), step S5, step S7, step S4 is repeated, If it passes, it will progress to step S7-> step S8, and the alerting | reporting of the alignment error (notifying that automatic alignment was not able to be performed appropriately) will be performed to the display part 14 (the display surface 14a).

  When the examiner performs the auxiliary operation after confirming the notification of the alignment error, the process proceeds from step S9 to step S11 to step S12 in the flowchart of FIG. The position of the bright spot image (alignment target) is detected while the apparatus main body 13 (eye characteristic measurement unit 30) is automatically moved in the XY directions with the movement target position set by the above as a target. Thereafter, the operation is the same as in the situation where the auxiliary operation described above is performed.

  In addition, when the examiner performs an operation of switching to the manual alignment mode after confirming the notification of the alignment error, the procedure proceeds from step S31 to step S32 in the flowchart of FIG. The apparatus main body 13 (eye characteristic measuring unit 30) can be moved to an arbitrary position (for example, the designated position 44 in FIG. 13). At this time, since the operation in the auto alignment mode is stopped in step S31, the notification of the alignment error is stopped. Thereafter, the operation is the same as in the situation where the manual alignment mode is switched to the above-described state.

  Further, if the examiner does not take any action even after confirming the notification of the alignment error, in the flowchart of FIG. 7, the process proceeds to step S9 → step S10 → step S9, and a predetermined time elapses. Thereafter, the measurement of the eye refractive power of the eye E and the shape of the cornea Ec of the eye E using the eye characteristic measurement unit 30 is not executed, and the alignment measurement control process is completed.

  In the ophthalmologic apparatus 10 as an embodiment of the ophthalmologic apparatus according to the present invention, when the auto alignment mode is started, the anterior eye image E ′ (the eye E to be examined) displayed on the display unit 14 (the display surface 14a) is displayed. An alignment target is set in the image of the anterior eye part), and a target position marking symbol 41 is superimposed and displayed on the position (bright spot image) as the alignment target. For this reason, the examiner confirms the position of the target position marking symbol 41 in the anterior segment image E ′ (the image of the anterior segment of the eye E) of the display unit 14 (the display surface 14a). As soon as the movement of the unit 13 (eye characteristic measurement unit 30) in the XY direction is started, the position to be the alignment target can be grasped. As a result, the examiner automatically moves the apparatus main body 13 (eye characteristic measurement unit 30) in the XY directions to properly position the eye E with respect to the eye E (automatic alignment is appropriately performed). It is possible to grasp whether or not the automatic alignment is appropriately performed without waiting for the completion of (including the case where it is not detected). Therefore, the ophthalmologic apparatus 10 can recognize that the automatic alignment cannot be appropriately performed without waiting for the end of the automatic alignment operation.

  In addition, the ophthalmologic apparatus 10 can grasp that the automatic alignment cannot be properly performed without waiting for the end of the automatic alignment operation. If this is not performed properly, the auxiliary operation can be immediately performed or the manual alignment mode can be switched without waiting for the end of the automatic alignment operation. Therefore, in the ophthalmologic apparatus 10, even when automatic alignment cannot be performed, an operation corresponding to the inability to perform alignment can be performed immediately, and the optical characteristics (eye characteristics) of the eye E to be examined can be measured. It is possible to suppress an increase in the time required for.

  Furthermore, in the ophthalmologic apparatus 10, when the automatic alignment mode is started, the alignment target is set in the anterior segment image E ′ (image of the anterior segment of the eye E) displayed on the display unit 14 (the display surface 14a). The target position marking symbol 41 is superimposed and displayed on the position (bright spot image) as the alignment target. For this reason, the examiner confirms the position of the target position marking symbol 41 in the anterior segment image E ′ (the image of the anterior segment of the eye E) of the display unit 14 (the display surface 14a). As soon as the movement of the unit 13 (eye characteristic measurement unit 30) in the XY direction is started, the position to be the alignment target can be grasped. Thereby, the examiner can grasp that the automatic alignment is appropriately performed immediately after the automatic alignment operation is started. Therefore, the examiner can grasp that the optical characteristic (eye characteristic) of the eye E can be appropriately measured only by looking at the display unit 14 (the display surface 14a), and the measurement can be smoothly performed. It can be.

  When the auto-alignment mode is started, the ophthalmologic apparatus 10 sets an alignment target in the anterior segment image E ′ (image of the anterior segment of the eye E) displayed on the display unit 14 (display surface 14a). The target position marking symbol 41 is superimposed and displayed on the position (bright spot image) as the alignment target. For this reason, the examiner confirms the position of the target position marking symbol 41 in the anterior segment image E ′ (the image of the anterior segment of the eye E) of the display unit 14 (the display surface 14a). It is possible to grasp where in the partial image E ′ is the alignment target. Thereby, for example, when the examiner has set (detected) the glossy object 43 such as a makeup glitter as an alignment target (bright spot image), the examiner can remove the glossy object 43 or use the glossy object 43. This can be dealt with by removing the cause of erroneously setting (detecting) the alignment target (bright spot image), such as by finely adjusting the angle to reduce the amount of reflected light. Therefore, in the ophthalmologic apparatus 10, it is possible to make it easier to appropriately measure the optical characteristics (eye characteristics) of the eye E to be examined by the eye characteristics measurement unit 30.

  When the auto-alignment mode is started, the ophthalmologic apparatus 10 sets an alignment target in the anterior segment image E ′ (image of the anterior segment of the eye E) displayed on the display unit 14 (display surface 14a). The target position marking symbol 41 is superimposed and displayed on the position (bright spot image) as the alignment target. Further, when the movement target position is set by the auxiliary operation, the ophthalmologic apparatus 10 sets the bright spot image (bright spot image S) closest to the movement target position as the alignment target. Here, in the ophthalmologic apparatus 10, for example, either the bright spot image S formed by the XY alignment light projection optical system 35 or another bright spot (the glossy object 43 in this example) is the correct bright spot image ( If it is impossible to determine whether the image is a bright spot image S), the target position marking symbol 41 is displayed on both the bright spot image S and another bright spot (glossy object 43). Alternatively, the bright spot image S and other bright spots (glossy object 43) are alternately displayed with the target position marking symbols 41 superimposed thereon. In this case, the examiner confirms the position of the target position marking symbol 41 in the anterior segment image E ′ (the image of the anterior segment of the eye E) of the display unit 14 (the display surface 14a). It can be understood that the point image S and other bright spots (glossy object 43) are set as alignment targets. For this reason, the examiner can set the correct luminescent spot image S as the alignment target by setting the correct luminescent spot image S (the vicinity thereof) as the movement target position by the auxiliary operation. In other words, in the ophthalmologic apparatus 10, even when the correct luminescent spot image S and another luminescent spot (glossy object 43) are set as alignment targets, the luminescent spot image S (near the vicinity) is moved by the auxiliary operation. When the target position is set, it is possible to prevent other erroneously detected bright spots from being used as alignment targets, and only the correct bright spot image S can be set as the alignment target. Therefore, in the ophthalmologic apparatus 10, it is possible to make it easier to appropriately measure the optical characteristics (eye characteristics) of the eye E to be examined by the eye characteristics measurement unit 30.

  When the auto-alignment mode is started, the ophthalmologic apparatus 10 sets an alignment target in the anterior segment image E ′ (image of the anterior segment of the eye E) displayed on the display unit 14 (display surface 14a). The target position marking symbol 41 is superimposed and displayed on the position (bright spot image) as the alignment target. Further, when the movement target position is set by the auxiliary operation, the ophthalmologic apparatus 10 sets the bright spot image (bright spot image S) closest to the movement target position as the alignment target. Therefore, when the correct bright spot image S and another bright spot (glossy object 43) are set as alignment targets, the examiner sets the vicinity of the correct bright spot image S as a movement target position by an auxiliary operation. The correct luminescent spot image S can be set as an alignment target only. That is, the ophthalmologic apparatus 10 does not require that the movement target position be accurately matched with the correct luminescent spot image S in the auxiliary operation, but is closest to the correct luminescent spot image S with respect to a plurality of bright spots. If the movement target position is set, the correct bright spot image S can be set as the alignment target. Thereby, in the ophthalmologic apparatus 10, a correct position can be used as an alignment target more easily.

  In the ophthalmologic apparatus 10, when the auto-alignment mode is executed, when the display surface 14a (image display area 14b in the present embodiment) that displays an image such as the anterior segment (anterior segment image E ′) is touched. Then, the operation in the auto alignment mode is interrupted to wait for an auxiliary operation (wait). For this reason, in the ophthalmologic apparatus 10, it is possible to perform an auxiliary operation appropriately and without feeling uncomfortable regardless of the operation in the auto alignment mode being executed.

  In the ophthalmologic apparatus 10, when the alignment target (bright spot image) cannot be detected even after the automatic alignment mode is started, the anterior segment image E ′ (the eye E to be examined) is displayed on the display unit 14 (the display surface 14 a). Only the anterior eye portion image) is displayed, and the target position marking symbol 41 is not displayed. For this reason, the examiner simply checks the display unit 14 (the display surface 14a), and for example, the automatic alignment is appropriately performed because the bright spot image S as the alignment target is not properly formed. I can grasp that there is no. As a result, the examiner should search for the reason why the bright spot image S is not properly formed as a reason why the automatic alignment is not properly performed. It can be easy. Therefore, in the ophthalmologic apparatus 10, usability can be improved.

  In the ophthalmologic apparatus 10, the XY alignment light projection optical system 35 in the eye characteristic measurement unit 30 projects an XY alignment index light beam toward the eye E (its cornea Ec), thereby an image of the anterior eye part of the eye E (the eye) The bright spot image S (XY alignment index image) formed on the anterior segment image E ′) is used as an alignment target. In the ophthalmologic apparatus 10, the anterior segment image E ′ (an image of the anterior segment of the eye E) is displayed on the display unit 14 (the display surface 14 a), and the alignment target in the anterior segment image E ′ is displayed. The target position marking symbol 41 is superimposed and displayed as appropriate. Therefore, in the ophthalmologic apparatus 10, whether or not the target position marking symbol 41 is displayed, the position of the target position marking symbol 41 in the anterior segment image E ′, and whether or not the bright spot image S is appropriately formed. The state of the anterior segment image E ′ (whether or not the eyelid is closed or whether or not the eyelash is hung) can be confirmed at a time only by looking at the display unit 14 (the display surface 14a). Can be possible. Thereby, in the ophthalmologic apparatus 10, it can be made possible to find the cause which cannot perform automatic alignment by comprehensively judging them. Thus, the ophthalmologic apparatus 10 can easily and appropriately determine whether it is better to perform an auxiliary operation by the examiner or to switch to the manual alignment mode.

  In the ophthalmologic apparatus 10, the bright spot image S formed by the XY alignment light projection optical system 35 is used as an alignment target, and a target position marking symbol 41 is superimposed on the anterior segment image E ′ on the display unit 14 (display surface 14 a). Display as appropriate. For this reason, the ophthalmologic apparatus 10 can make it possible to grasp whether or not automatic alignment can be performed properly, and easily grasp the cause when automatic alignment cannot be performed properly. Can be. This is because the automatic alignment cannot be properly performed because a bright spot different from the bright spot image S (the glossy object 43 in the above example) is detected as a bright spot image, and various causes. (For example, the XY alignment index light beam from the XY alignment light projection optical system 35 is not properly projected onto the cornea Ec of the eye E or the cornea Ec of the eye E is different from the normal shape). Although the image S cannot be formed, the display mode of the target position marking symbol 41 on the anterior segment image E ′ (not being an appropriate position or not being displayed) differs depending on the cause.

  In the ophthalmologic apparatus 10, when an auxiliary operation is performed, the eye characteristic measurement unit 30 (apparatus main body unit 13) is automatically moved in the XY directions with the movement target position set by the auxiliary operation as a target. The position of the image (alignment target) is detected. For this reason, in the ophthalmologic apparatus 10, the alignment target (bright spot image S) is selected according to the display mode of the target position marking symbol 41 on the anterior segment image E ′ displayed on the display unit 14 (the display surface 14a). It is possible to prompt the eye characteristic measuring unit 30 (device main body unit 13) to move with respect to the eye E to a position where it is possible to appropriately detect. Thereby, in the ophthalmologic apparatus 10, when the cause of the reason that the automatic alignment is not properly performed is obtained and the cause is eliminated by the movement of the eye characteristic measurement unit 30 (device main body unit 13), The cause can be eliminated by the auxiliary operation. Therefore, the ophthalmologic apparatus 10 can improve the probability of appropriately performing automatic alignment, that is, appropriately forming an alignment target in the anterior segment image E ′ and appropriately detecting the alignment target.

  In the ophthalmologic apparatus 10, the movement target position in the auxiliary operation can be set by designating an arbitrary position on the display unit 14 (the display surface 14a). For this reason, in the ophthalmologic apparatus 10, the movement target position can be set at an arbitrary position of the anterior segment image E ′ displayed on the display unit 14 (the display surface 14a). Thereby, in the ophthalmologic apparatus 10, the setting of the movement target position for moving the eye characteristic measurement unit 30 (device main body unit 13) by the examiner can be made easily and with a high degree of freedom. Therefore, in the ophthalmologic apparatus 10, the examiner can easily and appropriately set the movement target position according to the situation in the actual anterior segment image E ′, and the probability of appropriately performing automatic alignment is improved. Can be made.

  In the ophthalmologic apparatus 10, the movement target position in the auxiliary operation can be set by moving the position of the target position marking symbol 41 displayed on the display unit 14 (the display surface 14a). For this reason, in the ophthalmologic apparatus 10, the movement target position can be set at an arbitrary position of the anterior segment image E ′ displayed on the display unit 14 (the display surface 14a). Thereby, in the ophthalmologic apparatus 10, the setting of the movement target position for moving the eye characteristic measurement unit 30 (apparatus main body unit 13) by the examiner can be made easily and with a high degree of freedom. Therefore, in the ophthalmologic apparatus 10, the examiner can easily and appropriately set the movement target position according to the situation in the actual anterior segment image E ′, and the probability of appropriately performing automatic alignment is improved. Can be made.

  In the ophthalmologic apparatus 10, when an auxiliary operation is performed, the movement in the XY directions of the eye characteristic measurement unit 30 (apparatus main body unit 13) according to the auxiliary operation has priority over the alignment operation targeting the alignment target. Do it. For this reason, in the ophthalmologic apparatus 10, the eye characteristic measurement unit 30 (the apparatus main body unit 13) for the eye E to the position where the bright spot image S (the position) as the alignment target can be appropriately detected. Can be moved. In particular, in the ophthalmologic apparatus 10, when the movement target position is set by the auxiliary operation, the bright spot image (bright spot image S) closest to the movement target position is set as the alignment target. As a result, it is possible to prompt the eye characteristic measuring unit 30 (device main body unit 13) to move with respect to the eye E to a position at which the bright spot image S (the position) can be appropriately detected.

  In the ophthalmologic apparatus 10, when the position of the eye characteristic measuring unit 30 (apparatus main body part 13) with respect to the eye E is appropriate by executing the alignment operation in the auto alignment mode, the eye E to be examined by the eye characteristic measuring unit 30 is obtained. Measurement of optical characteristics (eye characteristics) is performed. For this reason, in the ophthalmologic apparatus 10, the optical characteristic (eye characteristic) of the eye E to be examined can be measured quickly, and usability can be improved.

  In the ophthalmologic apparatus 10, even if the alignment operation in the auto alignment mode is executed, if the position of the eye characteristic measurement unit 30 (apparatus main body unit 13) with respect to the eye E is not appropriate, an alignment error is notified. Do. For this reason, the ophthalmologic apparatus 10 does not rely on the judgment of the examiner only by displaying the target position marking symbol 41 on the display unit 14 (the display surface 14a) (including the case where it is not displayed), but automatically aligns appropriately. If this is not possible, the examiner can be surely grasped and the usability can be improved.

  In the ophthalmologic apparatus 10, when an operation for switching to the manual alignment mode is performed in the auto alignment mode, the mode is switched to the manual alignment mode. For this reason, when the examiner determines that the alignment is not properly performed in the automatic alignment operation by displaying the target position marking symbol 41 on the display unit 14 (the display surface 14a) (including the case where the target position marking symbol 41 is not displayed) Immediately after performing alignment by manual operation, the optical characteristic (eye characteristic) of the eye E to be examined can be measured by the eye characteristic measuring unit 30. Thereby, in the ophthalmologic apparatus 10, the optical characteristic (eye characteristic) of the to-be-tested eye E can be measured rapidly according to a condition, and usability can be improved.

  Therefore, in the ophthalmologic apparatus 10 as an embodiment of the ophthalmologic apparatus according to the present invention, it is possible to grasp that the automatic alignment cannot be appropriately performed before the alignment operation is completed.

  In the above-described embodiments, the ophthalmologic apparatus 10 as an embodiment of the ophthalmologic apparatus according to the present invention has been described. However, the eye characteristic measuring unit that measures the optical characteristics of the eye to be examined, and the eye with respect to the eye to be examined A drive unit that moves a characteristic measurement unit; an observation optical system that acquires an image of the eye to be examined; a display unit that displays an image of the eye to be examined acquired by the observation optical system; the eye characteristic measurement unit and the drive And a control unit that controls the observation optical system and the display unit, and the control unit sets and sets the position of the alignment target in the image of the eye to be examined acquired by the observation optical system An auto-alignment mode for moving the eye characteristic measurement unit with the position of the alignment target as a target, and in the auto-alignment mode, an image of the eye to be examined acquired by the observation optical system That the long ophthalmic device to be displayed on the display unit superimposed target position indication mark at a position of the alignment target, it is not limited to the aforementioned embodiments.

  In the above-described embodiment, an example in which the bright spot image S formed by the XY alignment light projection optical system 35 in the eye characteristic measurement unit 30 is used as an alignment target is shown. E ′) Any device having an auto-alignment mode for performing an automatic alignment operation of the eye characteristic measuring unit 30 (apparatus main body unit 13) with the position of the alignment target set above as a target is limited to the above-described embodiment. Is not to be done. As an example, the center position of the pupil of the eye E (pupil center) is set as the alignment target. In this case, for example, the control unit 21 detects a shape to be recognized as a pupil stored in advance based on the contrast in the input anterior eye image (anterior eye image E ′) (data) of the eye E to be examined. By doing so, it is possible to detect a region indicating the pupil in the eye E (anterior eye image E ′) and the center position thereof. Even when the pupil center is detected and set as an alignment target in this way, by displaying the target position marking symbol 41 superimposed on the pupil center (including an inappropriate position) as the set alignment target, The same effect as when the bright spot image S is used as an alignment target can be obtained.

  Furthermore, in the above-described embodiment, the ophthalmic apparatus 10 is provided with the eye characteristic measuring unit 30, but if the optical characteristic (eye characteristic) of the eye E is measured, the intraocular pressure of the eye E is measured. The intraocular pressure measurement unit may be provided, or both the ocular characteristic measurement unit 30 and the intraocular pressure measurement unit may be provided, and are limited to the above-described embodiments. It is not a thing.

  In the above-described embodiment, the target position marking symbol 41 has a rectangular shape that can surround the bright spot image S (alignment target) at a small interval. However, the target position (alignment target) can be grasped. For example, other shapes may be used, and other forms such as arrows and cross marks may be used, and the present invention is not limited to the above-described embodiments.

  In the above-described embodiment, the reflex measurement projection optical system 33 and the reflex measurement light receiving optical system 34 are provided to measure the eye refractive power of the eye E by objective measurement. As long as it receives light and measures the eye refractive power of the eye E, the optical configuration, the arrangement of the optical members, and the measurement principle may be different and are limited to the above-described embodiments. is not.

  In the embodiment described above, the alignment measurement control process for measuring the optical characteristic (eye characteristic) of the eye E by executing the auto alignment mode and the operation for executing the measurement by the eye characteristic measurement unit 30 in the auto alignment mode are performed. It was supposed to start by being done. However, if the alignment measurement control process is started to perform measurement by the eye characteristic measurement unit 30 (ophthalmic apparatus 10), for example, the alignment measurement control process starts when the power of the ophthalmic apparatus 10 is turned on. It may be started when it is detected that the subject's chin has been placed on the chin receiving portion 15, and the forehead portion 16 has received the subject's forehead. It may start upon detection, may have other configurations, and is not limited to the above-described embodiment. The detection that the subject's chin has been placed on the chin rest 15 and the subject's forehead has been applied to the forehead holder 16 is detected by pressure sensitive means on the chin rest 15 or the forehead holder 16. A sensor capable of detecting the presence of the subject's face, such as a sensor or an electrostatic sensor, or the presence of the subject's face in relation to the chin rest 15 or the forehead support 16 This can be performed by providing an optical sensor, a camera, or the like that can detect the above.

  In the above-described embodiment, as the auxiliary operation, the movement target position is set by moving the position of the target position marking symbol 41 displayed on the display unit 14 (its display surface 14a), and the display unit 14 (the display thereof). It was possible to set a movement target position by designating an arbitrary position on the surface 14a). However, the auxiliary operation is not limited to the above-described embodiment as long as it sets a movement target position that is a target of automatic movement of the eye characteristic measurement unit 30 (device main body unit 13).

  In the above-described embodiment, when the control unit 21 determines that the eye characteristic measurement unit 30 is in an appropriate position with respect to the eye E by performing the alignment operation (alignment is appropriately performed) The optical characteristic (eye characteristic) of the eye E is measured by the eye characteristic measuring unit 30, but it is determined whether or not an operation for performing the measurement is performed after determining that the alignment is properly performed. When the operation is performed, the optical characteristic (eye characteristic) of the eye E may be measured, and the measurement is not limited to the above-described embodiment.

  In the above-described embodiment, the ophthalmologic apparatus 10 provided with the eye characteristic measuring unit 30 is shown. However, the observation apparatus has an observation optical system that acquires an image of the anterior eye portion of the eye E, and observes the eye E to be examined. For example, an ophthalmic apparatus as OCT (Optical Coherence Tomography) or an ophthalmologic apparatus as a fundus camera may be used as long as it includes an optical unit (corresponding to the eye characteristic measuring unit 30 in the above-described embodiment). Alternatively, it may be an ophthalmologic apparatus as an SLO (laser scanning ophthalmoscope), or may be an ophthalmologic apparatus as an ophthalmologic photographing apparatus for photographing other retinas, and is limited to the above-described embodiments. It is not a thing.

  As described above, the ophthalmologic apparatus of the present invention has been described based on the embodiments. However, the specific configuration is not limited to the embodiments, and design changes and additions are allowed without departing from the gist of the present invention. The

DESCRIPTION OF SYMBOLS 10 Ophthalmology apparatus 12 Drive part 14 Display part 14a Display surface 21 Control part 30 Eye characteristic measurement part 32 Anterior eye part observation optical system 41 (as an example of an observation optical system) 41 Target position marking symbol E Eye to be examined S (As alignment target) ) Bright spot image

Claims (10)

An eye characteristic measuring unit for measuring optical characteristics of the eye to be examined;
A drive unit that moves the eye characteristic measurement unit with respect to the eye to be examined;
An observation optical system for acquiring an image of the eye to be examined;
A display unit for displaying an image of the eye to be examined acquired by the observation optical system;
A control unit that controls the eye characteristic measurement unit, the drive unit, the observation optical system, and the display unit;
The control unit acquires the position of a bright spot due to the reflection of the alignment index light irradiated to the eye to be examined from the cornea in the image of the eye to be examined acquired by the observation optical system or the observation optical system. Auto-alignment that sets the position of an alignment target at a position relative to the pupil in the image of the eye to be examined, and moves the eye characteristic measurement unit so that the main optical axis of the eye characteristic measurement unit matches the set alignment target An ophthalmologic apparatus, wherein a target position indication symbol is superimposed on a position of the alignment target in the image of the eye to be examined acquired by the observation optical system and displayed on the display unit in the auto alignment mode . When an auxiliary operation for setting a movement target position is performed in the auto alignment mode, the control unit moves the eye characteristic measurement unit while moving the eye characteristic measurement unit with the movement target position set by the auxiliary operation as a target. The ophthalmologic apparatus according to claim 1 , wherein the position of the alignment target is set in an image of the eye to be examined acquired by an optical system . In the case where the alignment target is set at the position of a bright spot due to reflection from the cornea of the eye to be examined with alignment index light irradiated on the eye to be examined
When the movement target position is set by the auxiliary operation, the control unit sets a bright spot closest to the movement target position as the alignment target in the image of the eye to be examined acquired by the observation optical system. The ophthalmic apparatus according to claim 2 . The ophthalmic apparatus according to claim 2 , wherein the auxiliary operation sets the movement target position by designating an arbitrary position on a display surface of the display unit. The said auxiliary operation sets the said movement target position by moving the position of the said target position indication symbol on the display surface of the said display part, The any one of Claim 2 to 4 characterized by the above-mentioned. The ophthalmic device described. The display unit has a touch panel function,
The control unit interrupts the operation in the auto alignment mode to wait for the auxiliary operation to be performed when an arbitrary position on the display surface is touched while the auto alignment mode is being executed. The ophthalmologic apparatus according to claim 4 or 5, wherein When the control unit determines that the eye characteristic measurement unit is in an appropriate position with respect to the eye to be examined by performing an alignment operation in the auto alignment mode, The ophthalmologic apparatus according to claim 1 , wherein measurement of optical characteristics is performed . Prior Symbol controller, when said eye characteristic measurement part with respect to the subject's eye also perform alignment operation by automatic alignment mode is judged to be not a proper position, to make a notification of alignment errors The ophthalmologic apparatus according to claim 1 , wherein the ophthalmic apparatus is characterized. Wherein the control unit by manual operation has a manual alignment mode for moving the eye characteristic measurement part, the the manual switch to alignment mode operation is performed in the automatic alignment mode, the switch Rukoto the manual alignment mode The ophthalmologic apparatus according to claim 1, wherein the ophthalmic apparatus is characterized. An observation optical unit for observing the eye and obtaining an image of the eye;
A drive unit for moving the observation optical unit with respect to the eye to be examined;
A display unit for displaying an image of the eye to be examined acquired by the observation optical unit;
A control unit that controls the observation optical unit, the drive unit, and the display unit;
The control unit obtains the position of a bright spot by reflection of the alignment index light irradiated to the eye to be examined from the cornea in the image of the eye to be examined acquired by the observation optical unit or the observation optical unit. An auto alignment mode in which the position of the alignment target is set at a position relative to the pupil in the image of the eye to be examined, and the observation optical unit is moved so that the main optical axis of the observation optical unit matches the set alignment target And an ophthalmic apparatus characterized in that , in the auto alignment mode, a target position marking symbol is superimposed on a position of the alignment target in the image of the eye to be examined acquired by the observation optical unit and displayed on the display unit.