JP2022144296A - Ophthalmologic device - Google Patents

Abstract

To provide an ophthalmologic device that acquires image information on a position of a safety stopper for an eye to be examined when measuring an intraocular pressure by a first measurement head.SOLUTION: An ophthalmologic device includes: a CT measurement head 12a for measuring an intraocular pressure of an eye E to be examined of a subject P; an RM measurement head 12b, which is an eye characteristic measurement head other than the intraocular pressure of the eye E to be examined, for executing alignment position adjustment in three axial directions for the eye E to be examined at the time of measurement; a monitor part 14 for displaying an image on a display screen 40; and a main control part 17 for controlling each part of the device. The main control part 17 calculates a safety stopper position As where front-back directional approach of the CT measurement head 12a is permitted to the eye E to be examined on the basis of result information on a Z-axis alignment position A1 of the RM measurement head 12b for the eye E to be examined, and when the safety stopper position As is calculated, allows the display screen 40 of the monitor part 14 to display a safety stopper image M1 indicating the safety stopper position As.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to ophthalmic devices.

Conventionally, in an ophthalmologic apparatus having a measurement unit in which a first measurement unit and a second measurement unit having different heights for measurement optical axes with respect to an eye to be inspected are arranged, the measurement unit when measuring the eye to be inspected using the first measurement unit and a height position storage means for storing height position information stored in the height position storage means when the second eye characteristic is measured after the first measurement unit finishes measuring the first eye characteristic. There is known an ophthalmologic apparatus including drive control means for driving and controlling a measuring unit based on height position information to perform height adjustment (see, for example, Patent Document 1).

JP 2007-289663 A

In the conventional technology, in a compound ophthalmologic apparatus equipped with a function for measuring (inspecting) a plurality of eye characteristics, in order to efficiently perform alignment for measuring a plurality of eye characteristics, Based on this, the measuring unit is driven and controlled to adjust the height. For this reason, for example, when measuring intraocular pressure after performing eye refractive power measurement in a compound ophthalmic apparatus, the tonometry head is allowed to approach the subject's eye in the front-rear direction during the intraocular pressure measurement. image information of the safety stopper position cannot be obtained. Therefore, in the intraocular pressure measurement, there is a problem that the examiner cannot grasp how much distance is ensured as the distance in the front-rear direction (Z-axis direction) between the subject's eye and the intraocular pressure measurement head.

The present disclosure has been made in view of the above circumstances. An object of the present invention is to provide an ophthalmic apparatus capable of obtaining

In order to achieve the above object, the ophthalmologic apparatus of the present disclosure includes a first measurement head for measuring the intraocular pressure of an eye to be examined of a subject, and an ocular characteristic measurement head other than the intraocular pressure of the eye to be examined. The apparatus includes a second measuring head that performs alignment position adjustment in three axial directions with respect to the subject's eye, a monitor section that displays an image on a display screen, and a control section that controls each section of the device. The control unit calculates a safety stopper position at which the first measuring head is allowed to approach the eye to be inspected in the front-rear direction, based on result information of the alignment position of the second measuring head to the eye to be inspected in the front-rear direction. It is characterized in that, when the safety stopper position is calculated, the display of the safety stopper image representing the safety stopper position is permitted on the display screen of the monitor unit.

Thus, the alignment information of the second measuring head is reflected in the calculation of the safety stopper position of the first measuring head, and the calculated safety stopper position is reflected in the display on the display screen. As a result, when the intraocular pressure is measured by the first measuring head, it is possible to obtain image information of the safety stopper position at which the first measuring head is allowed to approach the eye to be inspected in the front-rear direction.

1 is a perspective view showing the appearance of an ophthalmologic apparatus according to Example 1. FIG. 1 is a side view showing the appearance of an ophthalmologic apparatus according to Example 1. FIG. 2 is a block configuration diagram showing a control system in the ophthalmologic apparatus according to Example 1; FIG. FIG. 10 is a side view showing a reflex measurement state by the RM measurement head among the composite measurement heads in the ophthalmologic apparatus according to the first embodiment; 4 is an explanatory diagram showing the positional relationship among the RM measurement position, the CT switching position, the CT measurement position, and the safety stopper position with respect to the eye to be examined in the ophthalmologic apparatus according to the first embodiment; FIG. 4 is a flow chart showing an example of operations from power-on to completion of one measurement in the ophthalmologic apparatus according to Example 1. FIG. 4 is a diagram showing an example of a display image (anterior segment image) before switching to a safety stopper screen during CT measurement in the ophthalmologic apparatus according to Example 1. FIG. 5 is a diagram showing an example of a display image (a superimposed image in which a safety stopper image is superimposed on an anterior segment image) after switching to a screen having a safety stopper image during CT measurement in the ophthalmologic apparatus according to Example 1. FIG. In the ophthalmologic apparatus according to the second embodiment, a display image of the internal camera image during CT measurement and the safety stopper image displayed on the display screen of the monitor unit during CT measurement (area division between the anterior segment image and the safety stopper image) image). FIG. 10 is a diagram showing Modified Example 1 of the safety stopper image displayed on the display screen of the monitor unit during CT measurement in the ophthalmologic apparatus according to Example 2; FIG. 10 is a diagram showing a second modified example of the safety stopper image displayed on the display screen of the monitor during CT measurement in the ophthalmologic apparatus according to the second embodiment;

Hereinafter, a form for implementing an ophthalmologic apparatus according to the present disclosure will be described based on Example 1 and Example 2 shown in the drawings.

Example 1 is an ophthalmologic apparatus 1 that has two measurement heads, integrates an autorefractometer, a non-contact tonometer, and a corneal thickness measurement into one unit, and can obtain three test results in one measurement (" It is applied to the "autorefractotonometer").

In addition, as shown in each figure throughout this specification, the X axis, Y axis and Z axis are taken, and the left and right direction in FIG. 1 (X axis positive direction is right direction, negative direction is left direction) The direction is the rearward direction, the negative direction is the forward direction) and the vertical direction (the positive direction of the Y axis is the upward direction, the negative direction of the Y axis is the downward direction, and the height direction). Further, the subject P side (Z-axis negative direction) is the front side of the ophthalmic apparatus 1, the side facing the subject P (Z-axis positive direction) is the back side of the ophthalmic apparatus 1, and the subject P right side (X-axis positive direction) is defined as the right side of the ophthalmologic apparatus 1 , and the left side of the subject P (X-axis negative direction) is defined as the left side of the ophthalmic apparatus 1 .

First, the overall configuration of an ophthalmologic apparatus 1 according to a first embodiment will be described with reference to FIGS. 1 to 4. FIG.

As shown in FIGS. 1 and 2, the ophthalmologic apparatus 1 includes an ophthalmologic apparatus main body 2 having a main body portion 10 and a face support portion 20, an optical table 30 on which the ophthalmologic apparatus main body 2 is placed and which can be moved up and down, and a subject. An elevating chair 50 on which P sits and can be elevated is provided. Furthermore, a wide-angle camera 60 that acquires an image of the subject P (face image including left and right eyes), and a main controller 17 (controller) that controls the operations of the ophthalmologic apparatus main body 2 and the optical table 30 are provided. . The ophthalmologic apparatus 1 also includes an operation unit 19 for the examiner to input data to the ophthalmologic apparatus 1 and to give operational instructions.

The body portion 10 includes a base portion 11 and a composite measuring head 12 as a measuring portion, and is covered with a cover member 13 . As shown in FIGS. 1 and 2, a monitor section 14 as a display section and an operation section is provided at the top of the composite measuring head 12 . In addition, a speaker (sound generator) for the examiner to give instructions to the examinee P at the time of remote control, a microphone for transmitting the response of the examinee P to the examiner, etc. , or may be provided separately from the body portion 10 .

The base portion 11 of the body portion 10, the composite measuring head 12, and the monitor portion 14 are electrically connected. Also, the body portion 10, the face support portion 20, and the optical table 30 are electrically connected. Therefore, data and operation instructions can be communicated between the base portion 11 , the combined measuring head 12 and the monitor portion 14 , and between the main body portion 10 , the face support portion 20 and the optical table 30 . Alternatively, for example, a power supply unit provided in the base unit 11 may supply power to the composite measurement head 12 , the monitor unit 14 , the face support unit 20 , and the optical table 30 . Note that the power supply unit of the optical table 30 may be provided separately from the ophthalmologic apparatus body 2 .

As shown in FIG. 2, the composite measurement head 12 includes a CT measurement head 12a (first measurement head) for measuring intraocular pressure and corneal thickness of each of the left and right eyes of the subject P, and RM measurement head 12b (second measurement head) that is arranged at a position and performs reflex measurements for both the left and right eyes of the subject P, respectively.

Here, "reflection measurement" refers to measuring the spherical refractive power, cylindrical refractive power, and astigmatism axis angle of the eye E to be examined. "Intraocular pressure measurement" refers to measuring the intraocular pressure of the subject's eye E by blowing air during measurement. The term "corneal thickness measurement" refers to measuring the corneal thickness when measuring the intraocular pressure of the subject's eye E, since the measured value of the intraocular pressure is affected by the corneal thickness. The ophthalmologic apparatus 1 has a function of calculating an intraocular pressure correction value considering the influence of the corneal thickness on the intraocular pressure.

As shown in FIG. 4, the CT measurement head 12a is provided with a first measurement optical system 15a having an imaging device 151 together with a known measurement optical system for observation and photography and a control circuit for controlling the measurement optical system. there is As shown in FIG. 4, the RM measurement head 12b is provided with a second measurement optical system 15b having an imaging device 152 together with a known measurement optical system for observation and photography and a control circuit for controlling the measurement optical system. there is The first measurement optical system 15a and the imaging element 151 are arranged on the first inspection optical axis L1 and correspond to the internal camera of the CT measurement head 12a. The second measurement optical system 15b and the imaging device 152 are arranged on the second inspection optical axis L2 and correspond to the internal camera of the RM measurement head 12b. That is, the measurement optical system 15 is composed of the first measurement optical system 15a and the second measurement optical system 15b. In front of the composite measuring head 12, light sources for illuminating the anterior segment and for measuring the shape of the membrane are arranged in an annular shape.

As shown in FIG. 2, the base portion 11 is provided with a known XYZ driving mechanism/driving circuit 16 as a moving mechanism for driving the composite measuring head 12 in the XYZ directions. The XYZ drive mechanism/drive circuit 16 uses, for example, a stepping motor as a drive actuator. The XYZ driving mechanism/driving circuit 16 is provided with measuring head position sensors (not shown) for detecting the current position of the combined measuring head 12 in the X-axis direction, the current position in the Y-axis direction, and the current position in the Z-axis direction. ing. Information on the Z-axis alignment position A1 (see FIG. 4) of the RM measurement head 12b after alignment adjustment in the RM measurement is acquired by the measurement head position sensor.

The compound measuring head 12 is driven by the XYZ driving mechanism/driving circuit 16 with respect to the base portion 11 in the horizontal direction, that is, the front, rear, left, and right directions (X-axis direction and Z-axis direction), and the vertical direction perpendicular thereto, that is, the vertical direction (Y-axis direction). ). Thereby, the composite measuring head 12 is supported so as to be relatively movable in three-dimensional directions (horizontal direction and vertical direction) with respect to the base portion 11 . The compound measuring head 12 can be driven by operating the touch panel type display screen 40 of the monitor section 14 in addition to automatic control. That is, the display screen 40 functions as the operation section 19 .

The monitor unit 14 is composed of a color liquid crystal display, and has a touch panel type display screen 40 on which an image of an eye to be examined, an operation touch unit, and the like are displayed. The monitor section 14 is covered with a cover member 14a. A display control circuit unit and the like are incorporated in the cover member 14a. The monitor unit 14 is supported on one edge of the top of the compound measuring head 12 and is attached so as to be rotatable about a horizontal axis (X-axis or Z-axis) and a vertical axis (Y-axis). With this configuration, the display screen 40 of the monitor unit 14 can be arranged at a desired angle and direction in accordance with the examiner's position, posture, line-of-sight height, and the like. For example, the display screen 40 can be directed toward the back of the main body 10 as shown in FIG. 2, or the display screen 40 can be directed toward the front of the main body 10 as shown in FIG. Also, the monitor section 14 can be arranged on the right or left side of the main body section 10, and the display screen 40 can be directed to the right or left side.

The control circuit unit includes, in terms of hardware, a microprocessor, RAM, ROM, EEPROM, flash memory, and the like. The control circuit unit has a main control section 17, an internal memory 17a, and a storage section 18 shown in FIG. The main control section 17 is mainly composed of a microprocessor, the internal memory 17a is composed of RAM and the like, and the storage section 18 is composed of ROM, EEPROM, flash memory and the like.

As shown in FIG. 3, the main control unit 17 includes a measurement optical system 15, an XYZ drive mechanism/drive circuit 16, a monitor unit 14, a storage unit 18, an operation unit 19, a wide-angle camera 60, and a drive mechanism for the face support unit 20. 25, the table controller 33 of the optical table 30, etc. are connected. The main control unit 17 expands the program stored in the storage unit 18 or the internal memory 17a, for example, on a RAM, and controls each unit of the ophthalmologic apparatus 1 according to operation input signals from the operation unit 19 as appropriate. do.

As described above, the touch panel of the monitor unit 14 is included in the operation unit 19 , receives operation input to the operation touch unit displayed on the display screen 40 , the keyboard, etc., and transmits this operation input signal to the main control unit 17 . . The operation unit 19 also includes a power button of the main body unit 10, a power button 34 of the optical table 30 and a lift lever 35, which will be described later, and receives operation input to these components. It is sent to the control section 33 . Further, if the ophthalmologic apparatus 1 is provided with a control lever or an operation touch section that can be operated by the examiner or the subject, or is provided with a controller for the examiner or the subject, these are also operated by the operation section 19. , receives operation input for these, and sends this operation input signal to the main control unit 17 .

The face support portion 20 is provided to be connected to the front (front) of the base portion 11 of the body portion 10 . The configuration in which the face support section 20 is connected to the main body section 10 is not limited, and a configuration in which the face support section 20 is separated from the main body section 10 and placed on the optical table 30 is also possible.

The face support portion 20 includes a base portion 21 connected and fixed to the base portion 11, a chin support portion 22 provided on the base portion 21 so as to be vertically movable, and a pair of posts 23 provided projecting from both left and right sides of the base portion 21. , a forehead rest 24 provided at the upper ends of the pair of supports 23, and a drive mechanism 25 as a face support moving mechanism for moving the chin rest 22 in the vertical direction. Further, the face support part 20 may be provided so as to be movable in the front-rear direction and the left-right direction by the drive mechanism 25 in order to enable adjustment of the position in the front-rear direction and the left-right direction.

The subject P faces the ophthalmologic apparatus main body 2 while seated, for example, on an elevating chair 50 or the like placed in front of the ophthalmologic apparatus main body 2 , places his chin on the chin rest 22 , and rests on the forehead rest 24 . The eye characteristics are measured with the forehead pressed against the eye. In the case of a short subject P such as a child, the measurement may be performed by placing the face against the face support section 20 in a standing state without sitting on the lift chair 50 . In the case of a subject P on a wheelchair, the measurement may be performed by placing the face against the face support part 20 while on the wheelchair.

The chin rest part 22 is a member on which the chin of the subject P is placed, and whether or not the chin of the subject P is placed is detected by the detection sensor 26 . In this embodiment, the chin receiving portion 22 is vertically movable with respect to the base portion 21 so that the chin receiving portion 22 is vertically movable with respect to the main body portion 10. The entire support portion 20 may be configured to be vertically movable with respect to the main body portion 10 .

The drive mechanism 25 is configured by a known drive mechanism such as a drive mechanism including a stepping motor, a drive mechanism including a DC motor and a potentiosensor, or the like. The drive mechanism 25 is driven under the control of the main controller 17 to move the chin rest 22 in a predetermined upward or downward movement direction at a predetermined movement amount (movement distance) at a predetermined movement speed. This amount of movement can be detected by the number of steps of the stepping motor, numerical values of the potentiosensor, etc. Based on these numerical values, the movement of the chin rest 22 can be easily and accurately controlled.

The forehead support part 24 is a member against which the forehead of the subject P is abutted. In this embodiment, the forehead rest part 24 is fixed to the pair of supports 23, but as another embodiment, the position of the forehead rest part 24 in the front-rear direction may be adjustable. By adopting a configuration in which this adjustment is also performed by an appropriate drive mechanism, adjustment by automation and operation from the operation unit become possible. Furthermore, it is good also as a structure which can also be performed manually.

In addition, the face support unit 20 stably supports the face of the subject P so that the face (head) of the subject P does not move unexpectedly during the measurement of the eye characteristics of the subject's eye E. Any possible configuration may be used. As another different embodiment, for example, the face support part 20 may have only one of the chin support part 22 and the forehead support part 24 . In the case where only the forehead support portion 24 is provided, the forehead support portion 24 (or the face support portion 20 as a whole) can be moved vertically or the like by a predetermined drive mechanism.

The drive mechanism 25 is controlled by the main controller 17 . Specifically, the main control unit 17 calculates movement information such as the movement distance and the movement direction of the chin rest 22 based on the facial image including the left and right eyes photographed by the wide-angle camera 60, and according to this movement information, the movement information is calculated. The driving mechanism 25 is controlled to vertically move the chin receiving portion 22 .

In this embodiment, the main control section 17 functions as a face support section control section. good. In this case, the face support section control section drives and controls the drive mechanism 25 to move the chin rest section 22 in accordance with the instruction signal from the main control section 17 .

The optical table 30 includes a top plate 31 on which the ophthalmologic apparatus main body 2 is placed, an elevating mechanism 32 as a table moving mechanism for elevating the top plate 31, a table control unit 33 for controlling driving of the elevating mechanism 32, It comprises a power button 34, an elevating lever 35 for manually operating the elevating mechanism 32, and a caster base 36 to which the elevating mechanism 32 is attached. In the present embodiment, the ophthalmologic apparatus 1 performs measurement while the subject P is sitting on the lift chair 50 (sitting position), so the height of the optical table 30 is also set to correspond to the measurement in the sitting position. On the other hand, the ophthalmologic apparatus 1 may be configured to perform the measurement while the subject P is standing (upright position). In this case, the lifting chair 50 is not necessary, and the optical table 30 is of a height that corresponds to the measurement in the standing position.

The elevating mechanism 32 elevates the tabletop 31 under the control of the table control unit 33 . Thereby, the height of the tabletop 31 can be adjusted according to the height of the subject P and the position of the jaw. Thus, the lifting mechanism 32 actually lifts the top plate 31 .

The lifting mechanism 32 includes a lifting rod 32a that supports the top plate 31, a support rod 32b that vertically movably supports the lifting rod 32a, and a drive unit 32c that vertically moves the lifting rod 32a. Movement information (moving direction, moving distance, moving speed, etc.) of the lifting rod 32 a is detected by a rotary encoder or the like and sent to the table control section 33 .

The drive unit 32c is, for example, an electric type configured by an electric actuator or the like, but is not limited to this configuration. A hydraulic, pneumatic, screw, link, or other known lifting mechanism can be used as the drive unit 32c.

Caster base 36 supports the entire optical table 30 . The caster base 36 is provided with casters 36a with a locking mechanism. Therefore, an examiner or the like can easily move the ophthalmologic apparatus 1 to a desired installation location, and by locking the casters 36a at the installation location, the ophthalmologic apparatus 1 can be stably installed so as not to move unexpectedly.

The table control unit 33 includes a microprocessor, an internal memory 33a including a RAM, a ROM, a flash memory, and the like. The table control unit 33 is electrically connected to the lifting mechanism 32 , the power button 34 and the lifting lever 35 . The power button 34 sends an ON/OFF operation input signal to the table control section 33 . The lifting lever 35 can be freely pushed up and pushed down, and when these operations are performed, an operation input signal for raising or lowering is sent to the table control section 33 .

The table control unit 33 receives an operation input signal for raising or lowering from the lifting lever 35, controls and drives the driving unit 32c of the lifting mechanism 32, and moves the top plate 31 (optical table 30) in the vertical direction. . In the automatic adjustment mode, the table control section 33 controls the drive section 32c based on the input signal from the main control section 17 to move the table top 31 vertically.

As the elevating chair 50, a known chair whose seat surface 51 can be adjusted in height can be used. For example, it may be of a gas pressure type or an electric type. In this embodiment, the height of the seat 51 of the elevating chair 50 can be adjusted independently without interlocking with the ophthalmologic apparatus main body 2 or the optical table 30, but the present invention is not limited to this. For example, the seat surface 51 may be moved vertically or the like according to the operation of the operation touch portion displayed on the display screen 40 . Further, it is also possible to adopt a configuration in which the movement of the chin rest 22, the optical table 30, and the lifting chair 50 is controlled by the control of the main control section 17 so that they are arranged appropriately.

The wide-angle camera 60 has a cylindrical housing, a wide-angle lens, and an imaging device, and as shown in FIG. A single camera captures a face image including the left and right eyes of the subject P with an imaging device. The wide-angle camera 60 is positioned in front of the measurement head 12 facing the face support section 20, and the imaging optical axis L3 of the wide-angle camera 60 is aligned with the first inspection optical axis L1 of the CT measurement head 12a and the RM It is arranged at a position aligned with the second inspection optical axis L2 of the measuring head 12b in the left-right direction (X-axis direction). The wide-angle camera 60 sets the photographing optical axis K3 in the height direction (Y-axis direction) to the height position of the first inspection optical axis of the CT measurement head 12a and the height position of the second inspection optical axis L2 of the RM measurement head 12b. It is arranged at an intermediate height position sandwiched between and (see FIG. 4). The wide-angle camera 60 includes a super-wide-angle camera with a super-wide-angle lens and a fish-eye camera with a fish-eye lens.

Next, the main configuration of the ophthalmologic apparatus 1 according to the first embodiment will be described with reference to FIGS. 4, 5, 7, and 8. FIG.

The CT measurement head 12a corresponds to a first measurement head that measures the intraocular pressure of the eye E of the subject P to be examined. The RM measurement head 12b is an eye characteristic measurement head other than the intraocular pressure of the eye to be inspected E, and corresponds to a second measurement head that adjusts the alignment position of the eye to be inspected E in three axial directions (XYZ axial directions) during measurement. . When the eye characteristics are measured by the two measurement heads 12a and 12b, the RM measurement head 12b is first used to measure the reflex, and then the CT measurement head 12a is used to measure the intraocular pressure.

The main control unit 17 calculates a safety stopper position As in the front-rear direction of the CT measurement head 12a with respect to the eye E to be examined based on the result information of the Z-axis alignment position A1, which is the alignment position in the front-rear direction of the RM measurement head 12b with respect to the eye E to be examined. do. Then, when the safety stopper position As is calculated, the display screen 40 of the monitor unit 14 is allowed to display the safety stopper image M1 representing the safety stopper position As. Here, permitting the display of the safety stopper image M1 means that once the safety stopper position As is calculated, the display of the safety stopper image M1 can be shifted to in response to a system request or an operation request after the calculation timing. For example, when the safety stopper position As is calculated, the safety stopper image M1 may be displayed immediately at the calculation timing. M1 may be displayed.

Calculation of the safety stopper position As will be described with reference to FIGS. 4 and 5. FIG. The safety stopper position As is the Z-axis alignment position A1 of the RM measurement head 12b with respect to the subject's eye E, the nozzle distance N associated with switching from the RM measurement head 12b to the CT measurement head 12a, and the predetermined safety stopper setting distance α. is calculated by the formula (As=A1+N+α).

Here, the Z-axis alignment position A1 at the RM measurement position is the front-back position of the RM measurement head 12b after alignment adjustment, and the front-back position (Z-axis position) of the subject's eye E, which varies among individuals, is considered. It is Therefore, assuming that the Z-axis position of the subject's eye E in RM measurement does not change in CT measurement, the Z-axis alignment position A1 is shifted from the RM measurement position in the Y-axis direction by a switching distance C, as shown in FIG. It can be replaced with a Z-axis direction origin position A2 at a distant CT measurement position. Therefore, adding the known nozzle distance N to the Z-axis alignment position A1 results in the nozzle tip position A3. The nozzle tip position A3 is the current Z-axis position Az of the CT measurement head 12a. By adding the safety stopper set distance α based on a predetermined constant to the nozzle tip position A3 (=Z-axis current position Az), the safety stopper position As is obtained. In addition, "RM WD" in FIG. 5 is the working distance (working distance) in RM measurement, "CT WD" is the working distance in CT measurement, and the working distance in CT measurement is the working distance in RM measurement. Shorter than distance. Also, the safety stopper setting distance α is set to a distance shorter than the working distance in CT measurement.

When obtaining the result information of the Z-axis alignment position A1 of the RM measurement head 12b, the main control section 17 calculates the safety stopper position As before starting the intraocular pressure measurement by the CT measurement head 12a. When the safety stopper position As is calculated, the safety stopper image M1 is displayed on the display screen 40 from the preparation stage of alignment adjustment for intraocular pressure measurement by the CT measurement head 12a to the end of the intraocular pressure measurement. To give permission.

In Example 1, a predetermined touch operation is performed on the display screen 40 of the monitor unit 14 while the display of the safety stopper image M1 is permitted. The touch operation switches the screen display of the camera image of the subject P (see FIG. 7) to the screen display having the safety stopper image M1 (see FIG. 8). When the cancel button B13 is touched on the display screen 40, the screen display including the safety stopper image M1 (see FIG. 8) changes to the screen display using the camera image of the subject P (see FIG. 7). ).

Here, the "predetermined touch operation" refers to an operation of pressing a safety stopper button displayed on the display screen 40, for example. The “screen display by the camera image of the subject P” is, for example, an anterior segment image Gf captured by the imaging device 151 of the CT measurement head 12a, as shown in FIG. The “screen display having the safety stopper image M1” refers to, for example, a superimposed image in which the safety stopper image M1 is superimposed on the anterior segment image Gf, as shown in FIG.

The safety stopper image M1 is a positional relationship in the Z-axis direction among the position of the subject's eye E, the safety stopper position As indicated by the safety stopper icons 73L and 73R, and the current Z-axis position Az of the CT measurement head 12a indicated by the Z-axis position icon 72L. is an image representing Here, the information of the "current Z-axis position Az of the CT measurement head 12a" is acquired at any time during eye characteristic measurement by position detection by the measurement head position sensor provided in the XYZ driving mechanism/driving circuit 16, and safety is ensured. It is reflected in the stopper image M1.

As shown in FIG. 8, the safety stopper image M1 of Example 1 is an image in which a Z-axis position icon 72L and safety stopper icons 73L and 73R are displayed on Z-axis operation area scales 71L and 71R. The Z-axis operating area scales 71L and 71R are set so that the CT measurement head 12a operates in the Z-axis direction with respect to the average position of the eye E to be examined (the position of "0 mm" on the Z-axis operating area scales 71L and 71R) in the Z-axis coordinate system. Show the possible range. The Z-axis position icon 72L indicates the Z-axis current position Az (=nozzle tip position A3) of the CT measurement head 12a in the Z-axis coordinate system. Safety stopper icons 73L and 73R indicate the safety stopper position As in the Z-axis coordinate system. In CT measurement, the safety stopper image M1 is displayed in the left area of the display screen 40 of the monitor unit 14 when the object to be measured is the left eye, and is displayed on the display screen 40 of the monitor unit 14 when the object to be measured is the right eye. Display in the right area. Further, the display screen 40 of the monitor section 14 has first distance descriptions 74L and 74R and second distance descriptions 75L and 75R at the left and right upper positions of the Z-axis operation area scale 71 . The distance from the subject's eye E to the Z-axis current position Az is indicated by numbers (in units of mm) together with the Z-axis position icons 72L and 72R in the first distance notation portions 74L and 74R. In the second distance notation portions 75L and 75R, the distance from the subject's eye E to the safety stopper position As is indicated in numerals (in units of mm) together with the safety stopper icons 73L and 73R.

Next, an example of the operation of the ophthalmologic apparatus 1 according to the first embodiment from power-on to completion of one measurement will be described with reference to FIG. Note that the operation of the flowchart shown in FIG. 6 is started when the power of the ophthalmologic apparatus 1 is turned on. In the following description, it is assumed that the examiner operates the display screen 40 of the monitor unit 14 to give operation instructions to the ophthalmologic apparatus 1 while assisting the examinee P by the examinee's side.

In step S1, when the characteristics of the subject's eye E of the subject P are measured, when the examiner turns on the power of the ophthalmologic apparatus 1 (ophthalmologic apparatus main body 2 and optical table 30), the XYZ driving mechanism/driving circuit 16 performs complex Move the measuring head 12 to the initial position.

In step S2, following the movement of the composite measuring head 12 to the initial position in step S1, it is determined whether or not the subject P has placed his or her face on the chin rest 22 based on the detection value of the detection sensor 26 provided in the face support section 20. to judge. While the subject P does not put his/her face on the chin rest 22, the determination in step S2 is repeated.

In step S3, following the determination in step S2 that the subject P has placed his/her face on the chin rest 22, the XYZ driving mechanism/driving circuit 16 causes the composite measuring head 12 to retreat from the initial position by a predetermined amount of movement. . Here, the retreating movement means moving the compound measuring head 12 away from the eye E in the Z-axis direction from the distance to the eye E in the initial position while keeping the X-axis direction at the center position.

In step S4, following the retraction movement of the composite measuring head 12 in step S3, the face image including the left and right eyes of the subject P captured by the imaging element of the wide-angle camera 60 at the position at which the composite measuring head 12 was retracted is It is displayed on the display screen 40 of the monitor section 14 .

In step S5, following the display of the face image on the screen in step S4, or the judgment that the rough alignment by the wide-angle camera 60 is incomplete (rough alignment error) in step S8, the left and right eyes of the subject P are A position is touched on the screen of the display screen 40 .

In step S6, following the position touch of both the left and right eyes in step S5, the compound measuring head is moved to a predetermined position where both eyes can be captured on the display screen 40 and the standard Z-axis direction position of the subject's eye E. The XY position of the subject's eye E with respect to 12 is recognized. That is, the amount of positional deviation of the compound measuring head 12 in the X-axis direction and the Y-axis direction with respect to the left and right eye positions of the subject P touched on the screen is recognized.

In step S7, following the recognition of the XY position of the eye to be examined E in step S6, the height of the face support section 20 in the Y axis direction is adjusted so that the position of the eye to be examined E in the Y axis direction is within the range of precision alignment. The height is automatically adjusted by the drive mechanism 25 . Here, the adjustment amount in the Y-axis direction is the positional deviation amount in the Y-axis direction recognized in step S6.

In step S8, following the adjustment of the Y position of the subject's eye E in step S7, it is determined whether or not rough alignment using the display image from the wide-angle camera 60 has been completed without error. If the coarse alignment is completed without error, the process immediately proceeds to step S9. However, if an error occurs in the coarse alignment, the process returns to step S5, the right and left eyes of the subject P are touched again on the screen of the display screen 40, and the coarse alignment operation is repeated.

In step S9, following the determination of completion of coarse alignment in step S8 or the determination of incomplete alignment in the XY directions in step S10, alignment in the XY directions is performed for one eye designated to be inspected among both eyes. Adjustment is performed by the XYZ driving mechanism/driving circuit 16 .

Here, the XY direction alignment adjustment means that when an image captured by the internal camera of the composite measuring head 12 is displayed on the display screen 40 of the monitor unit 14, the anterior segment image Gf of one eye designated to be inspected is It refers to adjusting so as to fit within the screen of the display screen 40 . Note that the X-position recognition information of the subject's eye E obtained in step S6 is used in the adjustment of the XY-direction alignment. Further, when fine alignment is started following the completion of rough alignment, the image displayed on the display screen 40 of the monitor unit 14 is changed from the face image including the left and right eyes captured by the wide-angle camera 60 to the combined measurement head 12. It is switched to the anterior segment image Gf captured by the built-in internal camera (see FIG. 7).

In step S10, following the adjustment of the XY direction alignment in step S9, it is determined whether or not the XY direction alignment adjustment has been completed. If the XY-direction alignment adjustment has not been completed, the flow from step S9 to step S10 is repeated, and if the XY-direction alignment adjustment has been completed, the process proceeds to step S11.

In step S11, following the determination in S10 that the alignment adjustment in the XY directions has been completed, or the determination that the fine alignment has not been completed in step S12, the display screen 40 displaying the anterior segment image Gf of the subject's eye E is displayed. By tapping near the pupil with , automatic adjustment control of precision alignment is performed.

Here, in the automatic adjustment control of the precision alignment, as shown in FIG. and the center position of the screen is calculated, and the XYZ driving mechanism/driving circuit 16 is driven and controlled based on the calculated distance value. In drive control, the combined measuring head 12 is driven in the vertical and horizontal directions (Y-axis direction and X-axis direction) based on the distance calculation value, and the measuring head 12 is moved so that the corneal bright spot image P1 is focused. It drives in the front-rear direction (Z-axis direction). Then, when the corneal luminescent point image P1 enters the target area mark 40e representing the screen center area and the output value of the corneal luminescent point image P1 exceeds a predetermined value, the alignment completion condition is established and the precise alignment is completed (Fig. 9).

In step S12, following the automatic fine alignment adjustment in step S11, it is determined whether or not the fine alignment is completed. If the fine alignment has not been completed, the flow from step S11 to step S12 is repeated, and if the fine alignment has been completed, the process proceeds to step S13.

In step S13, following the determination of the completion of the fine alignment in step S12, the main control unit 17 controls the measurement optical system 15 to automatically perform measurement for obtaining examination information for the specified eye.

In step S14, following the measurement for the designated eye in step S13, the test results are stored in the storage unit 18, and the process proceeds to the end. When the measurement for the designated eye is completed, the test result is stored in the storage unit 18 and displayed on the display screen 40 so that the examiner can visually recognize the test information.

Next, a series of RM measurement and CT measurement using the CT measurement head 12a and the RM measurement head 12b is completed for both the left and right eyes of one subject P only by the touch operation of the examiner. The flow of operation when performing full-auto measurement will be described.

When full-auto measurement of the left and right eyes is started, and in the flow chart shown in FIG. 60 is used to complete the coarse alignment. Note that the operation of coarse alignment using the wide-angle camera 60 is performed in the initial stage of RM measurement in full-auto measurement for left and right eyes and in the initial stage of transition from RM measurement to CT measurement.

When the rough alignment for the RM measurement is completed, the process proceeds to S9 in the flowchart shown in FIG. 6, the right eye of the subject P is designated as the designated eye, and the XY direction alignment for the RM measurement is started. Then, when proceeding from S9 to S10→S11→S12→S13, fine alignment performed by tapping near the pupil passes, and RM measurement of the right eye of subject P is performed by the RM measurement head 12b.

When the RM measurement of the right eye of the subject P is completed by storing the examination information in the storage unit 18, the measurement head remains the RM measurement head 12b, and the eye designated by the subject P changes from the right eye to the left eye. to move to. At this time, when an operation for selecting the left eye is performed, the RM measurement head 12b automatically moves in the X-axis direction so that the position of the second inspection optical axis L2 and the left eye match. Then, the process advances from S9 to S10→S11→S12→S13, passes through XY direction alignment and precision alignment performed by tapping near the pupil, and the RM measurement of the left eye of the subject P is performed by the RM measurement head. 12b.

When the RM measurement of the left eye of the subject P is completed by storing the examination information in the storage unit 18, the left eye is still designated by the subject P, and the measurement head starts the CT measurement from the RM measurement head 12b. Move to head 12a. At this time, when an operation to select the CT measurement head 12a is performed, the CT measurement head 12a automatically moves in the Y-axis direction so that the position of the left eye coincides with the first inspection optical axis L1. Perform coarse alignment. Then, when the rough alignment for CT measurement is completed, the process proceeds from S9 to S10→S11→S12→S13, and after passing through XY direction alignment and fine alignment performed by tapping near the pupil, the A CT measurement of the left eye is taken.

When the CT measurement of the left eye of the subject P is completed by storing the examination information in the storage unit 18, the eye designated by the subject P changes from the left eye to the right eye while the measurement head remains the CT measurement head 12a. to move to. At this time, when an operation for selecting the right eye is performed, the CT measurement head 12a automatically moves in the X-axis direction so that the first inspection optical axis L1 and the position of the right eye match. Then, the process proceeds from S9 to S10->S11->S12->S13, and the CT measurement of the right eye of the subject P is performed after XY direction alignment and fine alignment performed by tapping near the pupil. Through the series of operations described above, the left and right eye full-auto measurement is completed.

As described above, when the left and right eyes are fully-automatically measured, for example, (RM measurement of right eye of subject P) → (RM measurement of left eye of subject P) → (left eye of subject P) (CT measurement of right eye of subject P) → (CT measurement of subject P's right eye), RM measurement and CT measurement of left and right eyes are performed without subject P moving between devices.

Next, the operation of displaying the safety stopper image M1 on the display screen 40 of the monitor section 14 will be described with reference to FIGS. 7 and 8. FIG.

In the fully automatic left and right eye measurement operation, when the RM measurement of the left eye of the subject P is shifted to the CT measurement of the left eye of the subject P, the main controller 17 causes the RM measurement head 12b to move to the eye E to be examined. Result information of the Z-axis alignment position A1, which is the longitudinal alignment position, is obtained. Then, when the result information of the Z-axis alignment position A1 is acquired, the safety stopper position As in the front-rear direction of the CT measurement head 12a with respect to the eye E is set to the acquired Z-axis alignment position A1, and the nozzle distance N and the safety stopper are set. It is calculated by the formula (As=A1+N+α) that adds the distance α.

When the safety stopper position As is calculated, the main control unit 17 displays the safety stopper image M1 on the display screen 40 from the preparation stage of the alignment adjustment for the intraocular pressure measurement by the CT measurement head 12a to the end of the intraocular pressure measurement. is allowed to be displayed. When the operator presses the safety stopper button on the display screen 40 of the monitor unit 14 while the display of the safety stopper image M1 is permitted, the anterior segment of the eye is captured by the internal camera of the subject P by the button pressing operation. The screen display of the image Gf (FIG. 7) is switched to the screen display of a superimposed image (FIG. 8) in which the safety stopper image M1 is superimposed on the anterior segment image Gf.

Here, the display image of the anterior segment image Gf before switching is, as shown in FIG. A target area mark 40e and a minimum pupil diameter determination mark 40f are displayed at the central position of the eye to be examined display area 40a.

In FIG. 7, operation button display areas 40b and 40c are arranged on both left and right sides of the subject's eye display area 40a, and an operation button display area 40d is arranged on the lower side. The operation button display area 40b includes an ID button B1 for inputting the ID of the subject P, an R button B2 for selecting the right eye, a chin rest vertical movement button B3 for vertically moving the chin rest 22, a reset button B4, a measurement A measurement mode button B5 for switching modes is arranged. In the operation button display area 40c, a setup button B6 for displaying a setup screen, an L button B7 for selecting the left eye, a measuring head forward/backward button B8 for moving the composite measuring head 12 in the forward/backward direction (Z-axis direction), and a manual measurement are displayed. A start button B9 for starting and a manual/auto switching button B10 are arranged. In the operation button display area 40d, various function buttons B11 such as a cataract button used when measuring an eye to be examined such as a cataract, a measurement result printout button, and a measurement value clear button are arranged.

As shown in FIG. 8, the superimposed image obtained by superimposing the safety stopper image M1 on the anterior eye segment image Gf after switching is displayed in the display area 40a of the subject's eye, etc. on the display screen 40 in the same manner as in FIG. is displayed, and the safety stopper image M1 is superimposed on this display.

As shown in FIG. 8, the safety stopper image M1 is an image in which Z-axis position icons 72L, 72R and safety stopper icons 73L, 73R are displayed on Z-axis operation area scales 71L, 71R. In CT measurement, when the object to be measured is the left eye, it is displayed in the left area of the display area 40a for the eye to be examined on the display screen 40, and when the object to be measured is the right eye, the It is displayed in the right area (FIG. 8 shows when the measurement target is the left eye). Further, the distance from the subject's eye E to the current Z-axis position Az is indicated by the Z-axis position icon in the first distance notation portions 74L and 74R at the left and right upper positions of the Z-axis operation area scale 71 on the display screen 40 of the monitor unit 14. 72L and 72R are indicated by numbers (in units of mm). In the second distance notation portions 75L and 75R, the distance from the subject's eye E to the safety stopper position As is indicated by numbers (in units of mm) together with the safety stopper icons 73L and 73R.

In FIG. 8, the operation button display area 40b is switched from the button layout shown in FIG. 7 to a button layout that selects only the R button B2 and the chin rest vertical movement button B3. The operation button display area 40c is switched from the button layout shown in FIG. 7 to a button layout that selects only the L button B7 and the measurement head front/rear button B8. The operation button display area 40d can be switched from the arrangement of various function buttons B11 shown in FIG. 7 to a button arrangement displaying an OK button B12, a cancel button B13, and an apply button B14. Here, by switching to the button arrangement shown in FIG. 8, it becomes possible to change the setting of the display positions of the safety stopper icons 73L and 73R by manual operation. In the manual operation, when the forward/backward button B8 is operated to a position to be changed, only the triangular icons of the safety stopper icons 73L and 73R move in the direction of the arrow marked on the button while leaving the key icon. do. When it is confirmed that the triangular icon has moved to the position where the setting change is desired, and the Apply button B14 or the OK button B12 is pressed, the remaining key icon moves until it overlaps the triangular icon. Therefore, the display positions of the safety stopper icons 73L and 73R are changed by manual operation.

As described above, when the examiner performs a predetermined operation on the display screen 40 of the monitor unit 14 while the display of the safety stopper image M1 is permitted, the screen display of the anterior segment image Gf shown in FIG. , to a screen display having a safety stopper image M1 shown in FIG. For this reason, when the intraocular pressure is measured by the CT measurement head 12a after the measurement by the RM measurement head 12b, the CT measurement head 12a is allowed to approach the eye E during the intraocular pressure measurement. Image information of the safety stopper position As, which is the limit position, is obtained. Therefore, in the intraocular pressure measurement, it is determined whether the position of the CT measurement head 12a ensures a safe distance that does not interfere with the intraocular pressure measurement as the working distance in the Z-axis direction between the eye E and the CT measurement head 12a. , can be grasped by the examiner by viewing the display screen 40 of the monitor unit 14 .

In the case of the screen display shown in FIG. 8, the position of "0 mm" on the Z-axis operating region scales 71L and 71R indicates the position of the eye E to be examined. Safety stopper icons 73L and 73R indicate the safety stopper position As. A Z-axis position icon 72L indicates the Z-axis current position Az of the CT measurement head 12a. That is, the image represents the positional relationship in the Z-axis direction between the position of the subject's eye E, the safety stopper position As, and the current Z-axis position Az.

In general, the working distance, which is the working distance in intraocular pressure measurement, is shorter than the working distance in eye refractive power measurement or corneal topography measurement. For example, while the working distance in intraocular pressure measurement is set to about 11 mm, the working distance in eye refractive power measurement or the like is set to about 35 mm. As described above, especially in intraocular pressure measurement with a short working distance, there is a high possibility that the nozzle for ejecting air provided in the intraocular pressure measurement head will come into contact with the eye E to be examined.

On the other hand, when the examiner views the display screen 40 of the monitor unit 14, the Z-axis direction positional relationship among the position of the eye to be examined E, the safety stopper position As, and the Z-axis current position Az is displayed in the safety stopper image M1. can be easily recognized by In this way, by providing useful display information representing the Z-axis direction positional relationship from the display screen 40, it is possible to perform eye examinations such as remote examinations and tablet examinations performed in a situation where the examiner is not present near the subject P. It becomes possible to carry out pressure measurements.

Next, the characteristic operation of the ophthalmologic apparatus 1 according to the first embodiment will be described. In the first embodiment, in the main control unit 17, based on the result information of the Z-axis alignment position A1 of the RM measurement head 12b with respect to the eye E, a safety mechanism that allows the CT measurement head 12a to approach the eye E in the front-rear direction. A stopper position As is calculated. When the safety stopper position As is calculated, the display screen 40 of the monitor unit 14 is permitted to display the safety stopper image M1 representing the safety stopper position As.

That is, the alignment information of the RM measurement head 12b is reflected in the calculation of the safety stopper position As of the CT measurement head 12a, and the calculated safety stopper position As is reflected in the display on the display screen 40. As a result, when the intraocular pressure is measured by the CT measurement head 12a, image information of the safety stopper position As at which the CT measurement head 12a is allowed to approach the eye E in the front-rear direction is obtained.

In particular, the examiner can obtain information about the safety stopper position As of the CT measurement head 12a from the display screen 40 by viewing the display screen 40 . For this reason, not only intraocular pressure measurement in a situation where an examiner is near the subject P, but also remote examination, tablet examination, etc. performed in a situation where the examiner is not near the subject P can measure the intraocular pressure. Measurement can be performed. For example, if the monitor unit 14 and the main control unit 17 are communicably connected to each other through a communication network consisting of short-range wireless communication, or are communicably connected to each other through a communication network such as the Internet, the examiner can Even if the subject P is not present, the examination can be performed from a remote location such as a separate room, a reception desk, or a management center.

In the first embodiment, in the main control unit 17, the Z-axis alignment position A1 of the RM measurement head 12b with respect to the eye E to be inspected is set to the nozzle distance N associated with switching from the RM measurement head 12b to the CT measurement head 12a, and a predetermined safety The safety stopper position As is calculated by adding the stopper set distance α.

That is, when the Z-axis alignment position A1 of the RM measuring head 12b with respect to the subject's eye E is determined, the safety stopper position As is calculated using the known nozzle distance N and the constant safety stopper setting distance α. The information on the Z-axis alignment position A1 of the RM measurement head 12b with respect to the eye E to be inspected takes into consideration that the Z-axis position of the eye to be inspected E when the subject P is supported by the face support portion 20 has individual differences. alignment position information. That is, the information of the Z-axis alignment position A1 is a value considering whether the eye E to be examined is at the average position, whether the eye E to be examined is at the back of the average position, or whether the eye to be examined E is outside the average position. . Therefore, the safety stopper position As can be accurately calculated only by obtaining information on the Z-axis alignment position A1 of the RM measuring head 12b with respect to the eye E to be examined.

In the first embodiment, when the main control unit 17 acquires the result information of the Z-axis alignment position A1 of the RM measurement head 12b, the safety stopper position As is calculated before starting the intraocular pressure measurement by the CT measurement head 12a. When the safety stopper position As is calculated, the display of the safety stopper image M1 on the display screen 40 is permitted from the preparation stage for the intraocular pressure measurement by the CT measurement head 12a to the end of the intraocular pressure measurement.

That is, the information of the safety stopper position As is desired not only during the intraocular pressure measurement by the CT measurement head 12a, but also during the preparation stage such as alignment adjustment before starting the intraocular pressure measurement by the CT measurement head 12a. I have a request from someone. On the other hand, for example, when shifting from the RM measurement head 12b to the CT measurement head 12a to measure the intraocular pressure, the result information of the Z-axis alignment position A1 of the RM measurement head 12b should be acquired before the transfer to the intraocular pressure measurement. is possible. Therefore, when the safety stopper position As is calculated in the preparatory stage for intraocular pressure measurement by the CT measurement head 12a, the safety stopper image M1 is displayed on the display screen 40 from the preparatory stage for intraocular pressure measurement to the end of the intraocular pressure measurement. is allowed to be displayed. Therefore, the image information of the safety stopper position As of the CT measurement head 12a with respect to the eye to be examined E must be acquired in response to the examiner's request from the preparation stage for the intraocular pressure measurement by the CT measurement head 12a to the end of the intraocular pressure measurement. becomes possible.

In the first embodiment, when a predetermined touch operation is performed on the display screen 40 while the display of the safety stopper image M1 is permitted in the main control unit 17, from the screen display by the camera image of the subject P, The screen display is switched to the one having the safety stopper image M1.

For example, when the examiner is near the subject P, the examiner can actually visually confirm the positional relationship between the position of the eye E to be examined and the position of the tip of the nozzle of the CT measurement head 12a. On the other hand, when the examiner is not near the examinee P, such as a remote examination or a tablet examination, the examiner can visually check the positional relationship between the position of the eye E to be examined and the position of the tip of the nozzle of the CT measurement head 12a. I can't confirm. As described above, when performing intraocular pressure measurement, the display request of the image information of the safety stopper position As of the CT measurement head 12a with respect to the eye to be inspected E differs depending on the positional relationship between the examiner and the subject P and the like. Therefore, when a touch operation is performed on the display screen 40 when the display of the safety stopper image M1 is permitted, the safety stopper position As of the CT measurement head 12a with respect to the eye to be examined E is changed in response to the display request of the examiner. Image information is obtained.

In Example 1, the safety stopper image M1 represents the positional relationship in the Z-axis direction among the position of the subject's eye E, the safety stopper position As, and the current Z-axis position Az, which is the current position of the CT measurement head 12a in the front-rear direction. image.

That is, during intraocular pressure measurement, the current Z-axis position Az of the CT measurement head 12a may fluctuate within the range of the working distance. At this time, by visually observing the safety stopper image M1, it is recognized whether the current Z-axis position Az is approaching the position of the eye E to be examined or whether the current Z-axis position Az is moving away from the position of the eye E to be examined. can. Similarly, whether the current Z-axis position Az is approaching the safety stopper position As, whether the current Z-axis position Az is moving away from the safety stopper position As, or whether the current Z-axis position Az exceeds the safety stopper position As, A position change can be recognized as to whether the position of E is approached.

In Example 1, the safety stopper image M1 is placed on Z-axis operation area scales 71L and 71R that indicate the range in which the CT measurement head 12a can operate in the Z-axis direction with respect to the eye E, and the Z-axis current of the CT measurement head 12a. The image shows Z-axis position icons 72L and 72R indicating the position Az and safety stopper icons 73L and 73R indicating the safety stopper position As.

That is, the safety stopper image M1 is an icon display in which Z-axis position icons 72L, 72R and safety stopper icons 73L, 73R are arranged along the Z-axis operation area scales 71L, 71R. During intraocular pressure measurement, the current Z-axis position Az of the CT measurement head 12a may fluctuate within the working distance. At this time, on the display screen 40, when the Z-axis position icons 72L and 72R move toward 0 (zero) of the Z-axis operation area scales 71L and 71R, it indicates that the CT measurement head 12a is approaching the eye E to be examined. , indicates that the CT measurement head 12a is moving away from the subject's eye E when the Z-axis position icons 72L and 72R move in opposite directions. Further, when the Z-axis position icons 72L and 72R move, the change in positional relationship is indicated with respect to the safety stopper icons 73L and 73R fixedly displayed at positions along the Z-axis operation area scales 71L and 71R.

As described above, the ophthalmologic apparatus 1 according to the first embodiment has the following effects.

(1) A first measurement head (CT measurement head 12a) for measuring the intraocular pressure of the subject's eye E of the subject P, and an eye characteristic measurement head other than the intraocular pressure of the subject's eye E. A second measuring head (RM measuring head 12b) that performs alignment position adjustment in three axial directions with respect to E, a monitor section 14 that displays an image on the display screen 40, and a control section (main control section 17) that controls each section of the device. , provided. The control unit (main control unit 17) adjusts the first alignment position (Z-axis alignment position A1) of the second measurement head (RM measurement head 12b) with respect to the eye E to be examined based on the result information of the alignment position (Z-axis alignment position A1) in the front-rear direction. A safety stopper position As at which the measuring head (CT measuring head 12a) is allowed to approach in the front-rear direction is calculated. The display of the safety stopper image M1 shown is permitted. Therefore, when the first measuring head (CT measuring head 12a) measures the intraocular pressure, the image of the safety stopper position As at which the first measuring head (CT measuring head 12a) is allowed to approach the eye E in the front-rear direction is shown. information can be obtained. In particular, not only intraocular pressure measurement in a situation where an examiner is near the subject P, but also intraocular pressure measurement by remote examination, tablet examination, etc. performed in a situation where the examiner is not near the subject P. can be done.

(2) The control unit (main control unit 17) moves the second measurement head (RM measurement head 12b) to the longitudinal alignment position (Z-axis alignment position A1) with respect to the eye E to be examined. ) to the first measurement head (CT measurement head 12a) and the predetermined safety stopper setting distance α are added to calculate the safety stopper position As. Therefore, the safety stopper position As can be accurately calculated only by obtaining information on the front-rear direction alignment position (Z-axis alignment position A1) of the second measurement head (RM measurement head 12b) with respect to the subject's eye E.

(3) When the control unit (main control unit 17) acquires the result information of the longitudinal alignment position (Z-axis alignment position A1) of the second measurement head (RM measurement head 12b), the first measurement head (CT measurement head Before starting the intraocular pressure measurement according to 12a), the safety stopper position As is calculated. When the safety stopper position As is calculated, the safety stopper image M1 is displayed on the display screen 40 from the preparation stage for the intraocular pressure measurement by the first measurement head (CT measurement head 12a) to the end of the intraocular pressure measurement. To give permission. Therefore, the first measurement head (CT measurement head 12a) for the eye E to be examined responds to the examiner's request from the preparation stage for the intraocular pressure measurement by the first measurement head (CT measurement head 12a) to the end of the intraocular pressure measurement. image information of the safety stopper position As can be acquired.

(4) The control unit (main control unit 17) performs a predetermined touch operation on the display screen 40 while the display of the safety stopper image M1 is permitted. The screen display with the part image Gf) is switched to the screen display with the safety stopper image M1. Therefore, when the display of the safety stopper image M1 is permitted, by performing a touch operation on the display screen 40, the image information of the safety stopper position As can be acquired in response to the display request of the examiner.

(5) The safety stopper image M1 is the position of the subject's eye E, the safety stopper position As, and the current Z-axis position Az, which is the current position of the first measuring head (CT measuring head 12a) in the front-rear direction, in the Z-axis direction. An image representing the positional relationship. Therefore, when measuring the intraocular pressure, the position of the first measuring head (CT measuring head 12a) may change with respect to the position of the eye to be examined E and the safety stopper position As simply by viewing the safety stopper image M1. The positional relationship of the current axis position Az and changes in the positional relationship can be easily recognized.

(6) Place the safety stopper image M1 on the Z-axis operating area scales 71L and 71R that indicate the range in which the first measuring head (CT measuring head 12a) can operate in the Z-axis direction with respect to the eye E, and The image shows Z-axis position icons 72L and 72R indicating the current Z-axis position Az of (CT measurement head 12a) and safety stopper icons 73L and 73R indicating the safety stopper position As. Therefore, when the safety stopper image M1 is visually observed during intraocular pressure measurement, the positional relationship among the Z-axis operating region scales 71L and 71R, the Z-axis position icons 72L and 72R, and the safety stopper icons 73L and 73R. change can be easily recognized.

(7) The first measurement head is the CT measurement head 12a that measures intraocular pressure of the eye E to be examined, and the second measurement head is the RM measurement head 12b that performs reflex measurement of the eye E to be examined. Therefore, a plurality of examination results such as intraocular pressure measurement, corneal thickness measurement, and refractometer measurement can be obtained in a short time by one measurement by the ophthalmologic apparatus 1 without the subject P moving between devices. This can contribute to reducing the burden on the examiner P.

A second embodiment is an example in which the safety stopper image is different from the safety stopper image M1 of the first embodiment. The safety stopper image M2 of Example 2 will be described with reference to FIG.

The safety stopper image M2 of Example 2 is displayed in a safety stopper image display section 41 set in a partial screen area of the display screen 40 of the monitor section 14, as shown in FIG. In other words, the anterior segment image Gf obtained by intraocular pressure measurement is displayed in a region of the display screen 40 excluding the safety stopper image display portion 41, and the screen display having the safety stopper image M2 includes the anterior segment image Gf and the safety stopper. The screen display is made up of an area-divided image from the image M2.

As a method of displaying the safety stopper image M2, as in the first embodiment, when a predetermined touch operation is performed on the display screen 40, the safety stopper image M2 is displayed from the screen display of the anterior segment image Gf of the subject P. (see FIG. 9). Further, when the display of the safety stopper image M1 is permitted, the screen display (see FIG. 9) is automatically switched to the screen display of the area-divided image having the safety stopper image M1, and while the display is permitted, the area-divided image It is also possible to maintain the screen display by . As the safety stopper image display section 41, as shown in FIG. It may be set to lower left, upper left, or the like.

As shown in FIG. 9, the safety stopper image M2 is an image in which an eye to be inspected icon 81, a Z-axis origin position 82, a nozzle tip position 83, and a safety stopper line 84 are displayed in an illustration. The eye icon 81 indicates the current position of the eye E to be examined. A Z-axis origin position 82 indicates a position where the Z-axis alignment position A1 of the RM measurement head 12b (=Z-axis direction origin position A2 at the CT measurement position) is replaced with the CT measurement head 12a in the Z-axis coordinate system. The nozzle tip position 83 (=nozzle tip position A3) is connected to the Z-axis origin position 82 by a Z-axis straight line in the Z-axis coordinate system, and indicates the Z-axis current position Az of the CT measurement head 12a. A safety stopper line 84 is displayed as a line orthogonal to the Z axis between the eye icon 81 and the nozzle tip position 83 in the Z axis coordinate system, and indicates the safety stopper position As. As shown in FIG. 9, a CT working distance range 85 is also added to the safety stopper image M2 as an illustration.

That is, the safety stopper image M2 is an illustration display of the setting explanatory drawing (FIG. 5) of the safety stopper position As in the Z-axis direction in intraocular pressure measurement. During intraocular pressure measurement, the current Z-axis position Az of the CT measurement head 12a may fluctuate within the CT working distance range 85 . At this time, when the nozzle tip position 83 moves toward the subject's eye icon 81, it indicates that the CT measurement head 12a is approaching the subject's eye E, and when the nozzle tip position 83 moves in the opposite direction, the CT measurement head 12a It shows that it is moving away from the eye E to be examined. Further, when the nozzle tip position 83 moves, a change in the positional relationship is indicated with respect to the safety stopper line 84 fixedly displayed between the eye icon 81 and the nozzle tip position 83 .

In the main control unit 17 of the second embodiment, when displaying the icon 81 of the eye to be inspected, the icon 81 of the eye to be inspected is not displayed until the position of the eye E to be inspected E in the front-rear direction is determined after the display is started. Alternatively, it is temporarily displayed at an average position. Then, when the longitudinal position of the eye to be examined E is determined during CT measurement alignment, the eye to be examined icon 81 is displayed at the determined position in the longitudinal direction of the eye to be examined E, or the temporary display is rewritten to the actual display (see FIG. 9). ing.

Here, the position of the subject's eye E in the front-rear direction can be determined by adding a contact sensor other than the detection sensor 26 to the face support unit 20, or adding a side camera other than the wide-angle camera 60 to the composite measurement head 12. can be detected by adding Based on the detection of the position of the eye E in the front-back direction, the position of the eye E in the front-back direction is determined. Temporary display of the subject's eye icon 81 at an average position means displaying the subject's eye icon 81 with a dashed line, displaying it in a light color, or the like.

That is, when the safety stopper position As is calculated and the display of the safety stopper image M2 on the display screen 40 is started, when the subject P moves his/her face from the face position during RM measurement, the CT measurement is started. There is a possibility that the position of the eye examination E is shifted. Therefore, in a situation where the actual position of the eye to be inspected E is not known, for example, if the eye to be inspected icon 81 of the safety stopper image M2 is actually displayed at an average position, the examiner can see the eye to be inspected icon 81 and the nozzle tip position 83. and the safety stopper line 84 or a change in the positional relationship may be erroneously recognized. On the other hand, while the position of the eye to be examined E in the front-rear direction is not known, the display of the eye to be examined icon 81 is omitted or temporarily displayed at an average position, and the position of the eye to be examined E in the front-rear direction is found. Then, it is displayed or rewritten to the main display. Therefore, the eye to be examined E in the safety stopper image M2 is displayed at the determined correct position in the front-rear direction during intraocular pressure measurement. Other configurations and actions are the same as those of the first embodiment, so illustrations and explanations are omitted.

As described above, in Example 2, in addition to the effects of (1), (2), (3), (4), (5), and (7), the following effects are obtained. be done.

(8) Using the safety stopper image M2 as the subject eye icon 81 indicating the current position of the subject eye E and the Z-axis alignment position A1 of the second measurement head (RM measurement head 12b) as the first measurement head (CT measurement head 12a). , a nozzle tip position 83 of the first measuring head (CT measuring head 12a), and a safety stopper line 84 indicating the safety stopper position As. Therefore, when observing the safety stopper image M2 during intraocular pressure measurement, the positional relationship between the eye icon 81 to be examined, the nozzle tip position 83, and the safety stopper line 84, and changes in the positional relationship can be easily understood on the Z-axis. It can be easily recognized by the illustration display of the direction.

(9) When displaying the icon 81 of the eye to be examined, the control unit (main control unit 17) does not display the icon 81 of the eye to be examined until the position of the eye E to be examined in the front-rear direction is not known after the start of display. or temporarily displayed at an average position. When the position of the eye to be examined E in the front-rear direction is determined, the eye to be examined icon 81 is displayed at the position in the front-rear direction of the eye to be examined E that has been determined, or the temporary display is changed to the actual display. This prevents the examiner from erroneously recognizing the positional relationship between the nozzle tip position A3 of the CT measuring head 12a and the safety stopper position As with respect to the position of the eye to be inspected E and changes in the positional relationship during intraocular pressure measurement.
[Modification 1]

Modification 1 is an example in which the safety stopper image is different from the safety stopper image M2 of the second embodiment. The safety stopper image M3 of Modification 1 will be described with reference to FIG.

The safety stopper image M3 of Modification 1 is an image in which an eye to be inspected icon 91, a CT measurement head icon (first measurement head icon) 92, a Z-axis operating region scale 93, and a safety stopper line 94 are illustrated. there is The subject's eye icon 91 indicates the current position of the subject's eye E in the Z-axis coordinate system. A CT measurement head icon 92 indicates the tip shape of the CT measurement head 12a in the Z-axis coordinate system by illustration. The Z-axis operating area scale 93 indicates the range in which the CT measurement head 12a can operate in the Z-axis direction in the Z-axis coordinate system. A safety stopper line 94 is displayed as a line perpendicular to the Z axis between the subject eye icon 91 and the CT measurement head icon 92 in the Z axis coordinate system, and indicates the safety stopper position As. In addition, as shown in FIG. 10, the CT working distance range 95 is also added to the safety stopper image M3 by illustration display.

That is, the safety stopper image M3 is an illustration of the measurement situation when the position of the subject's eye E of the subject P is viewed from the side during CT measurement, using an illustration icon. During intraocular pressure measurement, the current Z-axis position Az of the CT measurement head 12a may fluctuate within the CT working distance range 95 . At this time, when the CT measurement head icon 92 moves toward the subject's eye icon 91, it indicates that the CT measurement head 12a is approaching the subject's eye E, and when the CT measurement head icon 92 moves in the opposite direction, the CT measurement head 12a is moving away from the eye E to be examined. Further, when the CT measurement head icon 92 moves, a change in the positional relationship is indicated with respect to the safety stopper line 94 fixedly displayed between the eye icon 91 and the CT measurement head icon 92 .

As described above, in Modification 1, in addition to the effects of (1), (2), (3), (4), (5), (7), and (9), the following effects is obtained.

(10) The safety stopper image M3 is composed of an eye icon 91 indicating the current position of the eye E and a first measuring head icon (CT measuring head icon 92) indicating the tip shape of the first measuring head (CT measuring head 12a). , a Z-axis operating area scale 93 indicating the range in which the first measuring head (CT measuring head 12a) can operate in the Z-axis direction, and a safety stopper line 94 indicating the safety stopper position As. . For this reason, when the safety stopper image M3 is viewed during intraocular pressure measurement, the positional relationship among the subject eye icon 91, the first measurement head icon (CT measurement head icon 92), and the safety stopper line 94. can be easily recognized from the illustration display using the illustration icon.
[Modification 2]

In this example, the safety stopper image is a three-dimensional illustration display image instead of the two-dimensional illustration display safety stopper image M3 of Modification 1. FIG. The safety stopper image M4 of Modification 2 will be described with reference to FIG.

The safety stopper image M4 of Modification 2 is a three-dimensional illustration of a three-dimensional eye icon 96, a three-dimensional CT measurement head icon 97, and a safety stopper surface 98. FIG. Furthermore, a safety stopper image M3', which is a perspective view of the safety stopper image M3 in the two-dimensional illustration display of Modification 1, is added to the side of the safety stopper image M4 in the three-dimensional illustration display. The three-dimensional eye to be examined icon 96 is arranged such that the three-dimensional eye to be examined icon 96 indicating the left and right eyes to be examined E is placed inside a rectangular box, and the front position box surface of the three-dimensional eye to be examined icon 96 is used as a safety stopper surface 98. there is

In other words, the safety stopper image M4 is a 3D illustration display of the position of the subject's eye E of the subject P viewed obliquely from the side during the CT measurement, using an illustration icon. Therefore, during intraocular pressure measurement, in addition to the effects of Modification 1, the position of the three-dimensional subject eye icon 96, the movement of the three-dimensional CT measurement head icon 97, the safety stopper surface 98, and the movement of the three-dimensional CT measurement head icon 97 during remote examination, tablet examination, etc. can be grasped by an image that is close to the actual observation image in the intraocular pressure measurement performed while the examiner is near the subject P.

As described above, in Modification 2, in addition to the effects of (1), (2), (3), (4), (5), (7), and (9), the following effects is obtained.

(11) The safety stopper image M4 is a three-dimensional eye icon 96 indicating the current position of the eye E and a three-dimensional CT measurement head icon 97 (three-dimensional image) indicating the tip shape of the first measurement head (CT measurement head 12a). A first measuring head icon) and a safety stopper surface 98 indicating the safety stopper position As are three-dimensionally illustrated. Therefore, when observing the safety stopper image M4 during intraocular pressure measurement, the three-dimensional eye icon 96, the three-dimensional first measurement head icon (three-dimensional CT measurement head icon 97), the safety stopper surface 98, The positional relationship and changes in the positional relationship can be easily recognized by the 3D illustration display using the three-dimensional icon.

As described above, the embodiments of the present disclosure have been described in detail with reference to the drawings. It is not limited. Even if there is a change in design within the scope of the present disclosure, it is of course included in the present disclosure.

In Example 1, an example of the composite measuring head 12 using the CT measuring head 12a as the first measuring head and the RM measuring head 12b as the second measuring head is shown. However, the second measuring head of the composite measuring head is not limited to the RM measuring head. For example, a KR measurement head, a corneal shape measurement head, a fundus imaging head, an eye axial length measurement head, an endothelial cell measurement head, and the like, are heads for measuring eye characteristics other than the intraocular pressure of the subject's eye, and are used during measurement. Various measurement heads may be used as long as they perform alignment position adjustment in three axial directions with respect to eye examination.

In the first embodiment, when a predetermined touch operation is performed on the display screen 40 while the display of the safety stopper image M1 is permitted, the safety stopper image is displayed from the screen display of the anterior segment image Gf of the subject P. An example of switching to superimposed image display in which M1 is superimposed has been shown. In the second embodiment, when the display of the safety stopper image M2 is permitted, the screen display of the anterior segment image Gf of the subject P is changed to the area-divided image display in which the safety stopper image M2 is displayed on the safety stopper image display unit 41. An example of switching to However, when the display of the safety stopper image is permitted, or when a predetermined touch operation is performed while the display is permitted, the full screen display of the anterior segment image of the subject is changed to the full safety stopper image. An example of switching to screen display may be used.

Example 1 shows an example of the safety stopper image M1, and Example 2 shows examples of the safety stopper images M2, M3, and M4. However, the safety stopper images are not limited to the examples of the safety stopper images M1, M2, M3, and M4. In other words, if the image represents the Z-axis positional relationship among the position of the subject's eye, the position of the safety stopper, and the Z-axis current position, which is the current position of the first measuring head in the front-rear direction, various safety measures with improved visibility can be obtained. A stopper image is also included.

In the first embodiment, the display screen 40 of the monitor unit 14 attached to the ophthalmologic apparatus main body 2 is used as the operation unit 19 . However, as the operation unit, the monitor unit may be detachable and operated by the examiner while holding the monitor unit. In addition to the monitor unit, a controller such as a tablet terminal, an information terminal such as a smartphone, or a dedicated terminal may be provided separately from the monitor unit. The display section of the controller may display a screen (including the image of the subject) similar to the screen displayed on the display screen of the monitor section. In this case, the examiner can hold the monitor unit and the controller and operate them while viewing the condition of the examinee from a desired location away from the main body of the ophthalmologic apparatus.

1 ophthalmic device 12 composite measurement head 12a CT measurement head (first measurement head)
12b RM measuring head (second measuring head)
14 monitor unit 20 face support unit 40 display screen 60 wide-angle camera 16 XYZ drive mechanism/drive circuit 17 main control unit (control unit)
P Examinee E Eye to be examined A1 Z-axis alignment position (front-back direction alignment position)
As Safety stopper position Az Z-axis current position of CT measurement head N Nozzle distance α Safety stopper set distance Gf Anterior segment image (camera image of subject P)
M1 Safety stopper images 71L, 71R of Example 1 Z-axis operation area scales 72L, 72R Z-axis position icons 73L, 73R Safety stopper icon M2 Safety stopper image 81 of Example 2 Eye icon 82 Z-axis origin position 83 Nozzle tip position 84 Safety stopper line M3 Safety stopper image of Example 2 (Modification 1) 91 Subject eye icon 92 CT measurement head icon (first measurement head icon)
93 Z-axis operating area scale 94 Safety stopper line M4 Safety stopper image of Example 2 (Modification 2) 96 Three-dimensional eye icon 97 Three-dimensional CT measurement head icon (three-dimensional first measurement head icon)
98 Safety stopper surface

Claims (11)

a first measuring head for measuring the intraocular pressure of the subject's eye;
a second measuring head, which is an eye characteristics measuring head other than the intraocular pressure of the eye to be inspected, and performs alignment position adjustment in three axial directions with respect to the eye to be inspected during measurement;
a monitor that displays an image on the display screen;
A control unit that controls each part of the device,
The control unit calculates a safety stopper position at which the first measuring head is allowed to approach the eye to be inspected in the front-rear direction based on result information of the alignment position of the second measuring head in the front-rear direction with respect to the eye to be inspected. ,
An ophthalmologic apparatus, wherein when the safety stopper position is calculated, display of a safety stopper image representing the safety stopper position is permitted on a display screen of the monitor unit. An ophthalmic device according to claim 1, wherein
The controller aligns the longitudinal alignment position of the second measuring head with respect to the eye to be inspected with a nozzle distance associated with switching from the second measuring head to the first measuring head and a predetermined safety stopper set distance. to calculate the safety stopper position. In the ophthalmic device according to claim 1 or claim 2,
When the controller acquires the result information of the longitudinal alignment position of the second measuring head, the controller calculates the safety stopper position before starting the intraocular pressure measurement by the first measuring head,
When the safety stopper position is calculated, the display of the safety stopper image on the display screen is permitted during a period from the preparation stage of the intraocular pressure measurement by the first measuring head to the end of the intraocular pressure measurement. and ophthalmic equipment. An ophthalmic device according to claim 3, wherein
When a predetermined touch operation is performed on the display screen while the display of the safety stopper image is permitted, the control unit displays the safety stopper image from the screen display by the camera image of the subject. An ophthalmologic device characterized by switching to a screen display. In the ophthalmic device according to any one of claims 1 to 4,
The safety stopper image is an image representing a Z-axis positional relationship among the position of the subject's eye, the safety stopper position, and the Z-axis current position, which is the current position of the first measuring head in the front-rear direction. and ophthalmic equipment. An ophthalmic device according to claim 5, wherein
a Z-axis position indicating the Z-axis current position of the first measuring head on a Z-axis operating area scale indicating a range in which the first measuring head can operate with respect to the eye to be inspected in the Z-axis direction; An ophthalmologic apparatus, comprising: an image displaying an icon and a safety stopper icon indicating the position of the safety stopper. An ophthalmic device according to claim 5, wherein
wherein the safety stopper image is an image in which an eye to be inspected icon indicating the current position of the eye to be inspected, a nozzle tip position of the first measuring head, and a safety stopper line indicating the safety stopper position are displayed as an illustration. An ophthalmic device characterized by: An ophthalmic device according to claim 5, wherein
The safety stopper image includes an eye icon indicating the current position of the eye to be examined, a first measuring head icon indicating the tip shape of the first measuring head, and an operable range of the first measuring head in the Z-axis direction. and a safety stopper line indicating the safety stopper position. An ophthalmic device according to claim 5, wherein
The safety stopper image includes a three-dimensional eye icon indicating the current position of the eye to be examined, a three-dimensional first measuring head icon indicating the tip shape of the first measuring head, and a safety stopper surface indicating the safety stopper position. , as a three-dimensional illustration-displayed image. In the ophthalmic device according to any one of claims 7 to 9,
When displaying the icon of the eye to be inspected, the control unit removes the display of the icon of the eye to be inspected or displays an average position of the eye to be inspected until the position of the eye to be inspected in the front-rear direction is not known after the start of display. shall be provisionally displayed to
An ophthalmologic apparatus, wherein when the position of the eye to be examined in the front-back direction is determined, the icon of the eye to be examined is displayed at the position in the front-back direction of the eye to be examined that has been determined, or the temporary display is rewritten to the actual display. An ophthalmic device according to any one of claims 1 to 10,
The first measurement head is a CT measurement head for measuring intraocular pressure of the eye to be examined,
The ophthalmologic apparatus, wherein the second measurement head is an RM measurement head that performs reflex measurement of the subject's eye.

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