JP6912171B2 - Ophthalmic examination equipment - Google Patents

Description

The present invention relates to an ophthalmic examination device.

In the field of ophthalmology, opticians, etc., a subjective test in which an optotype such as a Randold ring for measuring visual acuity or a radiation chart for measuring astigmatism is presented to the eye to be inspected, and the visual acuity value of the eye to be inspected is obtained based on the appearance of the optotype. Is widely practiced. In the subjective test, the examiner asks the subject how to see the optotype, and based on the response content, selects the optotype to be presented next and determines the visual acuity value. In addition, there is also an ophthalmologic examination device that automatically executes a subjective examination by having a control unit control an optotype or an optical system according to a predetermined control program.

For example, Patent Document 1 includes an optical system for the left eye and an optical system for the right eye that project the same fusion pattern onto the left eye and the right eye, respectively, as optotypes for inspecting visual function. An ophthalmologic examination device that fuses both eyes is disclosed.

International Publication No. 2003/041572

However, in the ophthalmologic examination apparatus disclosed in Patent Document 1, since the examiner cannot confirm the direction (line of sight, axis of view) of the eye to be inspected during the subjective examination, the state of rotation of the eye to be inspected and the state of fusion of the chief complaint. Cannot identify the relationship with. As a result, for example, it is difficult to identify the cause of the subject's inability to fuse.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an ophthalmologic examination apparatus capable of easily confirming the relationship between the rotational state of the eye to be inspected and the fusion state of the chief complaint. That is.

The ophthalmologic examination apparatus according to the embodiment includes an optotype presenting unit, an imaging unit, an orientation specifying unit, and a display control unit. The optotype presenting unit presents the optotype to the eye to be inspected at a variable presentation distance. The imaging unit photographs the anterior segment of the eye to be inspected. The orientation specifying portion identifies the orientation of the eye to be inspected. The display control unit displays the image of the anterior segment of the eye to be inspected acquired by the imaging unit on the display means, and represents the horizontal component in the reference direction corresponding to the presentation distance of the optotype presented by the optotype presenting unit. is displayed in the first display region provided with a first orientation image representing the Heisei amount of water orientation of the eye specified by the orientation specifying unit for one reference image and a reference direction in the vicinity of the upper end portion of the display area, the reference The second reference image showing the vertical component of the orientation and the second reference image showing the vertical component of the orientation of the eye to be examined with respect to the reference orientation are displayed in the second display area provided near the left end or the right end of the display area. ..

According to the ophthalmologic examination apparatus according to the present invention, it is possible to easily confirm the relationship between the rotational state of the eye to be inspected and the fusion state of the chief complaint. For example, it is possible to observe the eye position at the time of measuring the convergence and divergence force while checking the adjustment state.

The schematic diagram which shows the appearance structure of the ophthalmologic examination apparatus which concerns on embodiment. The schematic diagram which shows the structural example of the ophthalmic examination apparatus which concerns on embodiment. The schematic diagram which shows the structural example of the optical system of the ophthalmologic examination apparatus which concerns on embodiment. The schematic diagram which shows the structural example of the control system of the ophthalmic examination apparatus which concerns on embodiment. The schematic diagram which shows the structural example of the control system of the ophthalmic examination apparatus which concerns on embodiment. The operation explanatory drawing of the ophthalmologic examination apparatus which concerns on embodiment. The operation explanatory drawing of the ophthalmologic examination apparatus which concerns on embodiment. The operation explanatory drawing of the ophthalmologic examination apparatus which concerns on embodiment. The operation explanatory drawing of the ophthalmologic examination apparatus which concerns on embodiment. The operation explanatory drawing of the ophthalmologic examination apparatus which concerns on embodiment. The operation explanatory drawing of the ophthalmologic examination apparatus which concerns on embodiment. The operation explanatory drawing of the ophthalmologic examination apparatus which concerns on embodiment. The operation explanatory drawing of the ophthalmologic examination apparatus which concerns on embodiment. The flow chart of the operation example of the ophthalmologic examination apparatus which concerns on embodiment. The flow chart of the operation example of the ophthalmologic examination apparatus which concerns on embodiment. The flow chart of the operation example of the ophthalmologic examination apparatus which concerns on embodiment. The flow chart of the operation example of the ophthalmologic examination apparatus which concerns on embodiment.

An example of an embodiment of the ophthalmologic examination apparatus according to the present invention will be described in detail with reference to the drawings. It should be noted that the description contents of the documents cited in this specification and arbitrary known techniques can be incorporated into the following embodiments.

[Constitution]
FIG. 1 schematically shows an outline of the appearance configuration of the ophthalmologic examination apparatus according to the embodiment. The ophthalmic examination device 1 according to the embodiment is an ophthalmic examination device capable of performing subjective examination and objective measurement. The subjective test is a test for presenting an optotype to the eye of a subject (the eye to be inspected) and acquiring information on the eye to be inspected based on a response from the subject regarding the appearance of the optotype. Objective measurement is a measurement for acquiring information about an eye to be examined mainly by using a physical method without referring to a response from the subject.

The ophthalmologic examination device 1 can be connected to a controller for an examiner (for example, a tablet terminal) or a controller for an examinee (for example, a control lever unit) (for example) (not shown) via a wired or wireless communication path. The ophthalmologic examination device 1 is controlled based on the operation on the controller for the examiner and the controller for the subject. In the following, the left-right direction as seen from the subject may be the X direction, the vertical direction may be the Y direction, and the depth direction of the measurement head 100 as seen from the subject may be described as the Z direction.

The ophthalmologic examination device 1 includes a measurement head 100 and a control device 200. The measuring head 100 is provided with an optical system for performing the above-mentioned subjective inspection, objective measurement, and the like, and a moving mechanism system for moving the optical element. The control device 200 controls the measurement head 100, the controller for the examiner, and the controller for the subject.

The ophthalmologic examination device 1 includes an optometry table 3. The optometry table 3 is a desk for supporting the measurement head 100 and placing the controller for the examiner or the controller for the subject. The optometry table 3 is installed while being supported on the floor by the support portion 4. The height of the optometry table 3 can be adjusted up and down.

A support column 5 is erected on the optometry table 3. The base end portion of the lateral arm 6 is held at the tip end portion of the support column 5. A measurement head 100 is suspended from the tip of the lateral arm 6. For example, the support column 5 can be rotated in the rotation direction (arrow direction j, arrow direction k) about the axis by the arm moving mechanism 7. As a result, the lateral arm 6 is rotated about the axis. That is, the measurement head 100 is rotated about the axis. As a result, the measurement head 100 can be retracted from the examination space above the optometry table 3, and the examination can be efficiently proceeded by utilizing the empty space on the optometry table 3.

The arm moving mechanism 7 may move the tip end portion of the support column 5 in the vertical direction (arrow direction h) as the arm vertical movement mechanism. As a result, the lateral arm 6 is moved in the vertical direction. That is, the measurement head 100 is moved in the vertical direction. The arm moving mechanism 7 may move the lateral arm 6 in the vertical direction by expanding and contracting the support column 5 protruding upward from the optometry table 3 as an arm expanding / contracting mechanism. Even in this case, the measurement head 100 can be moved up and down according to the sitting height of the subject, and the measurement head 100 can be retracted from the examination space above the optometry table 3.

A stand or the like for storing the measuring head 100 may be separately provided, and the measuring head 100 may be arranged at a stable position by the above-mentioned rotation or vertical movement. In this case, it is possible to continuously reduce the load on the lateral arm 6 due to the weight of the measuring head 100.

The arm moving mechanism 7 can manually move the lateral arm 6 in the rotation direction or the vertical direction around the axis in response to the operation by the operator. The arm moving mechanism 7 may move the lateral arm 6 by an electric mechanism. In this case, an actuator for generating a driving force for moving the arm moving mechanism 7 and a transmission mechanism for transmitting the driving force are provided. The actuator is composed of, for example, a pulse motor. The transmission mechanism is composed of, for example, a combination of gears and a rack and pinion.

A storage unit 9 is provided on the side surface of the support unit 4, and the control device 200 and the like are stored. The configuration of the optometry table 3 is not limited to the configuration shown in FIG.

[Measurement head]
The measuring head 100 includes a left eye inspection unit 120L and a right eye inspection unit 120R. The left eye examination unit 120L and the right eye examination unit 120R are formed with optometry windows 130L and 130R, respectively. The left eye of the subject (the left eye to be examined) is examined through the optometry window 130L. The subject's right eye (right eye) is examined through the optometry window 130R.

FIG. 2 shows a block diagram of a configuration example of the measurement head 100 according to the embodiment. The measuring head 100 includes a moving mechanism system 110, a left eye inspection unit 120L, and a right eye inspection unit 120R. The moving mechanism system 110 is suspended from the lateral arm 6. The left eye inspection unit 120L and the right eye inspection unit 120R are three-dimensionally moved by the moving mechanism system 110 independently or in conjunction with each other. The left eye examination unit 120L accommodates an optical system for examination of the left eye to be inspected. The right eye examination unit 120R houses an optical system for examination of the right eye to be inspected.

(Movement mechanism system)
The moving mechanism system 110 includes a horizontal moving mechanism 111, rotating mechanisms 112L and 112R, and vertical moving mechanisms 113L and 113R. The moving mechanism system 110 may further include an arm moving mechanism 7.

The horizontal movement mechanism 111 is a horizontal movement mechanism 112L, 112R, a vertical movement mechanism 113L, 113R, a left eye inspection unit 120L, and a right eye inspection unit 120R in the horizontal direction (horizontal direction (X direction), front-back direction (Z direction)). ). Thereby, the horizontal positions of the eye examination windows 130L and 130R can be adjusted according to the arrangement position of the eye to be inspected. The horizontal movement mechanism 111 has, for example, a known configuration using a pulse motor, a feed screw, or the like, and receives a control signal from the control device 200 to move the rotation mechanisms 112L, 112R, and the like in the horizontal direction. The horizontal movement mechanism 111 can also be operated by an operator to manually move the above-mentioned rotation mechanisms 112L, 112R, etc. in the horizontal direction.

The rotation mechanism 112L rotates the vertical movement mechanism 113L and the left eye inspection unit 120L around a predetermined first axis connected to the horizontal movement mechanism 111. The first axis is an axis extending in a substantially vertical direction, and may be inclined at an arbitrary angle with respect to a horizontal plane. The rotating mechanism 112L has, for example, a known configuration using a pulse motor, a rotating shaft, or the like, and rotates the left eye inspection unit 120L or the like around the first axis in response to a control signal from the control device 200. Let me. The rotation mechanism 112L can also manually rotate the left eye inspection unit 120L or the like around the first axis in response to an operation by the operator.

The rotation mechanism 112R rotates the vertical movement mechanism 113R and the inspection unit 120R for the right eye around a predetermined second axis connected to the horizontal movement mechanism 111. The second axis is an axis extending in a substantially vertical direction like the first axis, and may be inclined at an arbitrary angle with respect to the horizontal plane. The second axis is an axis arranged at a position separated from the first axis by a predetermined distance. The distance between the first axis and the second axis is adjustable. The rotation mechanism 112R may rotate the right eye inspection unit 120R or the like in conjunction with the rotation of the rotation mechanism 112L, or the right eye inspection unit 120R independently of the rotation of the rotation mechanism 112L. Etc. may be rotated. The rotation mechanism 112R has a known configuration similar to that of the rotation mechanism 112L, and receives a control signal from the control device 200 to rotate the inspection unit 120R for the right eye or the like around the second axis. The rotation mechanism 112R can also manually rotate the right eye inspection unit 120R or the like around the second axis in response to an operation by the operator.

By rotating the left eye inspection unit 120L and the right eye inspection unit 120R by the rotating mechanisms 112L and 112R, the orientations of the left eye inspection unit 120L and the right eye inspection unit 120R are relatively changed. Is possible. For example, the left eye examination unit 120L and the right eye examination unit 120R are rotated in opposite directions around the eye rotation points of the left and right eyes of the subject. As a result, the eye to be inspected can be dissected and congested.

The vertical movement mechanism 113L moves the left eye inspection unit 120L in the vertical direction (Y direction). Thereby, the position of the eye examination window 130L in the height direction can be adjusted according to the arrangement position of the eye to be inspected. The vertical movement mechanism 113L has, for example, a known configuration using a pulse motor, a feed screw, or the like, and receives a control signal from the control device 200 to move the left eye inspection unit 120L in the vertical direction. The vertical movement mechanism 113L can also be operated by an operator to manually move the left eye inspection unit 120L in the vertical direction.

The vertical movement mechanism 113R moves the inspection unit 120R for the right eye in the vertical direction. Thereby, the position of the eye examination window 130R in the height direction can be adjusted according to the arrangement position of the eye to be inspected. The vertical movement mechanism 113R may move the right eye inspection unit 120R in conjunction with the movement by the vertical movement mechanism 113L, or the right eye inspection unit 120R may be moved independently of the movement by the vertical movement mechanism 113L. May be good. The vertical movement mechanism 113R has a known configuration similar to that of the vertical movement mechanism 113L, and receives a control signal from the control device 200 to move the inspection unit 120R for the right eye in the vertical direction. The vertical movement mechanism 113R can also be operated by an operator to manually move the inspection unit 120R for the right eye in the vertical direction.

(Configuration of each inspection unit)
The left eye examination unit 120L and the right eye examination unit 120R can operate individually.

The left eye examination unit 120L includes a first optotype presenting unit 122L, a first objective measurement unit 123L, and a first imaging unit 124L. The first optotype presenting unit 122L selectively presents a plurality of optotypes to the left eye to be inspected. The first objective measurement unit 123L is used to perform objective refraction measurement (objective measurement) of the left eye to be inspected. The first imaging unit 124L photographs the anterior segment of the left eye to be inspected. The left eye examination unit 120L may be provided with an optical element application unit that selectively applies a plurality of optical elements that can be arranged between the left eye to be inspected and the deflection member P described later to the left eye to be inspected. ..

The right eye examination unit 120R includes a second optotype presenting unit 122R, a second objective measurement unit 123R, and a second imaging unit 124R. The second optotype presenting unit 122R selectively presents a plurality of optotypes to the right eye to be inspected. The second objective measurement unit 123R is used to measure the objective refraction of the right eye to be inspected. The second imaging unit 124R photographs the anterior segment of the right eye to be inspected. The right eye inspection unit 120R may be provided with an optical element application unit that selectively applies a plurality of optical elements that can be arranged between the right eye to be inspected and the deflection member P described later to the right eye to be inspected. ..

The left eye inspection unit 120L and the right eye inspection unit 120R include an optical system as shown in FIG. The left eye examination unit 120L and the right eye examination unit 120R operate their optical systems to perform subjective examination and objective refraction measurement for each of the left eye examination EL and the right eye examination unit ER. It is configured as follows. The examiner and the examinee perform the inspection by appropriately operating the controller and the like.

When each inspection unit is provided with the above-mentioned optical element application unit, the optical element application unit includes a plurality of optical elements and a drive mechanism. The plurality of optical elements are a set of various lenses for inspecting the visual function of the eye to be inspected, and include, for example, at least one of a spherical lens, a cylindrical lens, and a prism lens. The plurality of optical elements are grouped according to the type of optometry parameter. For example, the type of optometry parameter includes at least one of spherical power, astigmatic power, astigmatic axis angle, addition power, interpupillary distance, prism power, and prism base direction. As a grouping for each type of optometry parameters, a set of spherical powers includes a plurality of spherical lenses, each of which is composed of spherical lenses having different spherical powers. The astigmatic power set includes a plurality of cylindrical lenses, each of which is composed of cylindrical lenses having different astigmatic powers. The astigmatic power set may be further switchable according to the astigmatic axis angle. The addition power set is composed of a removable positive power spherical lens and a negative power spherical lens. A set of prism powers includes a plurality of prism lenses, each of which is composed of prism lenses having different prism powers. The set of prism powers may be further switchable according to the prism base direction. The interpupillary distance is an examination condition set according to the interpupillary distance of the eye to be inspected. The interpupillary distance is set by sliding one or both of the left eye inspection unit 120L and the right eye inspection unit 120R in the horizontal direction (arrow direction m in FIG. 1).

The drive mechanism included in each inspection unit is configured so that each of the plurality of optical elements can be arranged in the optometry window and retracted from the optometry window. The drive mechanism included in each inspection unit receives a control signal from the control device 200 and switches the optical element. Thereby, at least one of spherical power, astigmatism power, astigmatism axis angle, addition power, interpupillary distance, prism power, and prism base direction can be switched and applied to the eye to be inspected.

[Optical system configuration]
FIG. 3 shows a block diagram of a configuration example of an optical system housed in the left eye inspection unit 120L and the right eye inspection unit 120R. The inspection unit 120L for the left eye includes a deflection member P, an optotype presenting optical system 10L, a photographing optical system 20L, an alignment optical system 30L and 31L, a reflex measuring optical system 40L, and a kerato measuring optical system 50L. .. The left eye inspection unit 120L is provided with an objective lens 60, a moving lens 70, a reflection mirror M, and beam splitters BS1 to BS3. The inspection unit 120R for the right eye includes a deflection member P, an optotype presenting optical system 10R, a photographing optical system 20R, an alignment optical system 30R and 31R, a reflex measuring optical system 40R, and a kerato measuring optical system 50R. .. The right eye inspection unit 120R is provided with an objective lens 60, a moving lens 70, a reflection mirror M, and beam splitters BS1 to BS3. The optical system of the left eye inspection unit 120L and the optical system of the right eye inspection unit 120R are symmetrically configured. Hereinafter, unless otherwise specified, the optical system of the left eye examination unit 120L will be described.

The optotype presentation optical system 10L is an optical system for projecting an optotype onto the fundus Ef of the left eye subject EL. The optotype presenting optical system 10L includes an LCD (Liquid Crystal Display) 11, a moving lens 70, and a reflection mirror M. The LCD 11 displays various optotypes (charts) for visual acuity measurement and visual function test. These optotypes include a plurality of optotypes, a single optotype, and the like. The visual acuity target for visual acuity measurement includes a fixed visual acuity target composed of a landscape chart, a visual acuity chart such as a Randold ring for visual acuity test, and an ETDRS (Early Treatment Diabetic Retinopathy Study) visual acuity chart. The optotypes for visual function tests include cross-cylinder test charts, radiation charts for astigmatism tests, cross charts for oblique examinations, red-green test charts, screening optotypes, cross ring charts, rotating oblique charts, and worms 4. There are point charts and so on. The plurality of optotypes include an ETDRS visual acuity chart, an illustration optotype, and a screening optotype. Single optotypes include precision stereoscopic optotypes, cross-oblique optotypes, astigmatism optotypes, and red-green test charts. These optotypes are selectively displayed on the LCD 11. Instead of the LCD 11, the optotype presenting optical system 10L illuminates one or more optotypes among a plurality of optotypes drawn on an electronic display device using EL (electroluminescence) or a rotating glass plate or the like. An object (turret type) that is appropriately arranged on the shaft may be provided.

The moving lens 70 is movable in the optical axis direction of the optotype presenting optical system 10L. The moving lens 70 is moved by the drive mechanism 70L. The drive mechanism 70L moves the moving lens 70 in response to a control signal from the control device 200. Thereby, it is possible to change the sphericality added to the left eye subject EL. For example, by moving the moving lens 70 in the optical axis direction by the amount of movement corresponding to the refractive power of the left eye EL to be inspected at the time of reflex measurement, it is possible to perform fixation cloud fog on the left eye to be inspected EL. In addition, at the time of subjective examination, the optotype can be presented at a position corresponding to the far point of the eye to be inspected, a position corresponding to the near point, or an arbitrary position in the middle, and the examination can be performed at an arbitrary examination distance. can.

The light from the LCD 11 passes through the moving lens 70 and is reflected by the reflection mirror M. The light reflected by the reflection mirror M passes through the beam splitter BS2 and is reflected by the beam splitter BS1. The light reflected by the beam splitter BS1 passes through the objective lens 60 and is deflected toward the fundus Ef of the left eye subject EL by the deflection member P.

The optotype presentation optical system 10L may be provided with a VCS lens for correcting the astigmatic power and the astigmatic axis angle of the left eye subject EL.

The photographing optical system 20L is an optical system for photographing the anterior segment of the left eye subject EL. The photographing optical system 20L includes a CCD (Charged-Coupled Device) 21. For example, when the anterior segment of the left eye subject EL is illuminated by an anterior segment illumination system (not shown), the reflected light from the anterior segment of the left eye subject EL is incident on the deflection member P. The deflection member P deflects the reflected light toward the objective lens 60. The reflected light deflected by the deflection member P passes through the objective lens 60, passes through the beam splitters BS1 and BS3, and is imaged on the light receiving surface of the CCD 21 by a CCD lens or the like (not shown). Further, the photographing optical system 20L functions as a light receiving system that receives the reflected light of the measured luminous flux projected on the left eye subject EL in the reflex measurement and the kerato measurement.

The alignment optical system 30L is an optical system for aligning the optical system of the left eye inspection unit 120L with respect to the left eye subject EL in the XY directions. The alignment optical system 30L projects a luminous flux (parallel light) for alignment onto the left eye EL to be inspected. The luminous flux for alignment is reflected by the beam splitter BS3, passes through the beam splitter BS1, passes through the objective lens 60 to be a substantially parallel luminous flux, and is deflected toward the cornea of the left eye EL to be inspected by the deflection member P. The light reflected by the cornea of the luminous flux for alignment projected on the left eye EL is returned by the same path as the incident path, passes through the beam splitter BS3, and is received by the CCD 21 of the photographing optical system 20L.

The alignment optical system 31L includes two or more cameras for substantially simultaneously photographing the anterior segment of the left eye EL to be examined from two or more different directions. Alignment in the Z direction (working distance direction) is performed from the parallax obtained based on the captured images of the anterior segment from two or more different directions acquired by using these cameras.

The reflex measurement optical system 40L is an optical system for performing reflex measurement (objective refraction measurement) of the left eye subject EL. The luminous flux for reflex measurement emitted by the reflex measurement optical system 40L is reflected by the beam splitter BS2, reflected by the beam splitter BS1, passes through the objective lens 60, and is directed to the fundus Ef of the left eye subject EL by the deflection member P. Is biased. The reflected light from the fundus of the light flux for reflex measurement projected on the left eye EL is returned by the same path as the incident path, passes through the beam splitters BS1 and BS3, and is received by the CCD21 of the photographing optical system 20L.

The kerato measurement optical system 50L is an optical system for performing kerato measurement of the left eye subject EL. The ring-shaped luminous flux emitted from the kerat ring light source emitted by the kerato measurement optical system 50L is deflected by the deflection member P and illuminates the cornea of the left eye subject EL. The reflected light from the cornea of the left eye EL to be inspected is deflected by the deflection member P, passes through the objective lens 60, passes through the beam splitters BS1 and BS3, and is formed as a ring-shaped image on the light receiving surface of the CCD 21 by a CCD lens (not shown). It is imaged.

The measurement head 100 automatically executes the alignment of the optical systems of the left eye inspection unit 120L and the right eye inspection unit 120R, the objective optometry measurement, the subjective optometry measurement, and the like under the control of the control system described later. It has become like. The measuring head 100 may further automatically perform a binocular balance test. In the subjective test, the value (objective value) obtained by the objective measurement is used. In particular, in the cross-cylinder test among the subjective tests, the astigmatic power and the astigmatic axis angle obtained in the objective test are used.

[Control system]
Next, the control system of the ophthalmologic examination apparatus 1 of the embodiment will be described with reference to FIGS. 4 and 5. The block diagrams shown in FIGS. 4 and 5 show a schematic configuration of a main part of the control system of the ophthalmologic examination apparatus 1. In FIGS. 4 and 5, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

As shown in FIG. 4, the control system of the ophthalmologic examination device 1 is mainly composed of a control device 200 that controls each part of the device. The control device 200 is stored in, for example, the storage unit 9. The control device 200 includes a control unit 201 and a storage unit 202. The control unit 201 includes a display control unit 201A and an optotype control unit 201B.

The storage unit 202 stores a computer program for ophthalmic examination including a control program for executing a process as described later, image data of an optotype pattern displayed on the LCD 11, and the like. Further, in the storage unit 202, an image of the anterior segment of the left eye subject EL acquired by using the photographing optical systems 20L and 20R, an image of the anterior segment of the right eye subject ER, a reflex measurement result, a kerato measurement result, and the like. Awareness test results etc. are saved. The control unit 201 reads out the computer program stored in the storage unit 202, and sequentially executes the computer program while referring to the image data and the like stored in the storage unit 202. Such a control unit 201 includes a processor for arithmetic control such as a CPU (Central Processing Unit).

A computer device (not shown) may be connected to the ophthalmologic examination device 1. In this case, the computer device is used as a console of the ophthalmic examination device 1 and is used to accumulate and manage the examination results by the ophthalmic examination device 1. It is also possible to configure the CPU and storage device of this computer device as the control device 200.

The control device 200 (control unit 201) controls the operation of the left eye inspection unit 120L and the right eye inspection unit 120R. Specifically, the control device 200 controls a horizontal movement mechanism 111 that horizontally moves the left eye inspection unit 120L and the right eye inspection unit 120R. The control device 200 controls the rotation mechanism 112L that rotates the left eye inspection unit 120L and the vertical movement mechanism 113L that moves the left eye inspection unit 120L up and down, respectively. Similarly, the control device 200 controls the rotation mechanism 112R that rotates the right eye inspection unit 120R and the vertical movement mechanism 113R that moves the right eye inspection unit 120R up and down, respectively. The control device 200 may control the arm moving mechanism 7 that moves or rotates the lateral arm 6 up and down.

The control device 200 (control unit 201) controls the operation of the optical system stored in the left eye inspection unit 120L and the right eye inspection unit 120R. The control device 200 (target control unit 201B) executes display control of the LCD 11, for example. Display control of the LCD 11 includes optotype switching control, optotype lighting control, optotype extinguishing control, and the like. Further, the control device 200 (control unit 201) executes operation control of the drive mechanisms 70L and 70R for moving the moving lens 70 in the optical axis direction.

The control device 200 (control unit 201) executes light reception control by the CCD 21, operation control of the alignment optical systems 30L, 31L, 30R, 31R, the ref measurement optical systems 40L, 40R, the kerato measurement optical systems 50L, 50R, and the like. The left eye examination unit 120L with respect to the left eye EL so that the deviation between the position of the spot light image projected on the left eye EL by the alignment optical system 30L and the position of the pupil center of the left eye EL is cancelled. It is possible to align the optical system in the XY direction. Similarly, the alignment optical system 30R can align the optical system of the right eye inspection unit 120R with respect to the right eye test ER in the XY direction. It is possible to perform alignment in the Z direction from the parallax obtained based on the captured image of the anterior segment of the left eye EL to be inspected from two or more directions different from each other acquired by using the alignment optical system 31L. Similarly, the alignment optical system 31R can perform alignment in the Z direction from the parallax obtained based on the captured image of the anterior segment of the right eye to be inspected ER from two or more different directions. The operation control of the reflex measurement optical systems 40L and 40R includes control of a measurement light source that emits a luminous flux for reflex measurement. The operation control of the kerato measurement optical systems 50L and 50R includes the control of the keratling light source.

When each inspection unit is provided with an optical element application unit, the control device 200 (control unit 201) is a drive mechanism for selectively applying the plurality of optical elements to at least one of the left eye test EL and the right eye test ER. To control and so on.

The control device 200 can be connected to the examiner controller 300 and the examinee controller 310 via a wired or wireless communication path, respectively. The control device 200 controls each part of the ophthalmologic examination device 1 by receiving an operation signal corresponding to the operation content for the examiner controller 300 and the examinee controller 310. The control device 200 (display control unit 201A) can display an operation screen, various information for performing measurement, and the like on the display unit of the examiner controller 300 and the examinee controller 310. For example, the control device 200 causes the display unit of the examiner controller 300 to display the target being inspected. Further, the control device 200 causes the display unit of the controller 310 for the subject to display an operation screen or the like.

Since the operating principle of alignment using the above-mentioned optical system, the measurement principle of subjective examination, the measurement principle of objective measurement, the measurement principle of corneal shape, and the like are already known, detailed description thereof will be omitted.

The control device 200 (control unit 201) controls the calculation unit 210. The calculation unit 210 obtains the objective value based on the measurement result by the objective refraction measurement using the left eye inspection unit 120L or the right eye inspection unit 120R. The calculation unit 210 uses a known method to obtain the shape of the ring optotype image acquired by receiving the return light of the ring-shaped measurement luminous flux projected on the fundus Ef by the reflex measurement optical systems 40L and 40R by the CCD 21. The objective value is obtained by analysis. The calculation unit 210 performs a predetermined calculation process on the image acquired by receiving the reflected light flux of the ring-shaped light flux projected on the cornea of the eye to be inspected by the cornea by the CCD 21, for example, by the kerato measurement optical systems 50L and 50R. Apply. Thereby, it is possible to calculate a parameter representing the shape of the cornea as an objective value. The control device 200 may include a calculation unit 210.

Further, as shown in FIG. 5, the calculation unit 210 includes the orientation specifying unit 211, the reference orientation specifying unit 212, the interpupillary distance acquisition unit 213, the difference information generation unit 214, the position specifying unit 215, and the refractive power. It includes a calculation unit 216 and a characteristic information generation unit 220. The characteristic information generation unit 220 includes an accommodation characteristic information generation unit 220A and a rotation characteristic information generation unit 220B.

The orientation specifying unit 211 specifies the orientation of the eye to be inspected (each of the left eye to be inspected EL and the right eye to be inspected ER). The orientation of the eye to be inspected includes the direction of the eye axis (line of sight) of the eye to be inspected, the direction of the optical axis of the eye to be inspected, the direction of the eye axis (axis of the eyeball) of the eye to be inspected, the direction of the line of sight of the eye to be inspected, and the aim of the eye to be inspected. The direction of the line, the direction of the center line of the pupil of the eye to be examined, and the like.

The orientation specifying unit 211 specifies the orientation of the left eye subject EL and specifies the orientation of the right eye examination ER by the same method as the orientation specification of the left eye examination EL. In the following, for convenience of explanation, unless otherwise specified, the left eye test EL or the right eye test ER will be referred to as “eyes to be inspected”.

The orientation specifying unit 211 specifies, for example, the direction of the line of sight centered on the rotation point of the eyeball of the eye to be inspected as the direction of the eye to be inspected. In this case, the orientation specifying unit 211 can obtain the line-of-sight direction θ based on the amount of movement of the position of the bright spot image formed by the spot light incident on the eyeball in the anterior eye portion image of the eye to be inspected. The spot light is incident on the eye to be inspected by an existing projection system such as the alignment optical systems 30L and 30R and the reflex measurement optical systems 40L and 40R, or a separately provided projection system. When a parallel luminous flux is incident on the eyeball, a spot-shaped virtual image (Purkinje image) is formed at the position Q (half the curvature of the cornea, R / 2) inside the cornea, as shown in FIG. 6A. Since the center of curvature R of the cornea and the eyeball rotation point O are different, when the eyeball is rotated around the eyeball rotation point O at a rotation angle θ, the position Q of the bright spot image in the anterior segment image is as shown in FIG. 6A. Move to. The orientation specifying unit 211 specifies the position Q of the bright spot image with reference to the characteristic portion in the anterior eye portion image of the eye to be inspected, and specifies the displacement of these positions as the movement amount d.

Assuming that the distance from the apex of the cornea to the rotation point O of the eyeball is L ₀ and the curvature of the cornea is r, the amount of movement d of the position Q of the bright spot image is expressed by the equation (1).

From the equation (1), the orientation specifying unit 211 can obtain the rotation angle θ. _{The distance L 0} from the apex of the cornea to the rotation point O of the eyeball may be a predetermined value (for example, 13 mm, which is an average value). Alternatively, this value may be input when the actual distance is known in the measurement by another device. For the curvature r of the cornea, a value obtained by kerato measurement can be used.

As described above, the orientation specifying unit 211 was obtained by analyzing the image of the anterior segment acquired by the photographing optical systems 20L and 20R to determine the position of the image based on the spot light (luminous flux) incident on the eye to be inspected. It is possible to specify the orientation of the eye to be inspected based on the position.

Further, the orientation specifying unit 211 may specify the pupil region in the image of the anterior segment of the eye to be inspected, and obtain the line-of-sight direction θ1 based on the amount of movement of the position of the pupil center of the specified pupil region. When the eyeball rotates around the eyeball rotation point O, the position Q1 of the center of the pupil in the anterior segment image of the eye to be inspected moves as shown in FIG. 6B. The orientation specifying unit 211 specifies the pupil region in the anterior segment image of the eye to be inspected, specifies the central position of the identified pupil region as the position Q1 of the pupil center, and displaces these positions. Is calculated as the movement amount d1.

Assuming that the distance from the corneal apex to the eyeball rotation point O is L and the distance from the corneal apex to the pupil center position Q1 is N, the movement amount d1 of the pupil center position Q1 is expressed by the equation (2). NS.

From the equation (2), the orientation specifying unit 211 can obtain the rotation angle θ1. _{The distance L 0} from the apex of the cornea to the rotation point O of the eyeball may be a predetermined value (for example, 13 mm, which is an average value). The distance N from the apex of the cornea to the position Q1 at the center of the pupil may be a predetermined value (for example, 3 mm, which is an average value). Alternatively, the measurement by another device, may be input to this value when the actual distance L ₀ and Q1 are known.

Further, the orientation specifying unit 211 may specify the orientation of the eye to be inspected by, for example, a scleral reflection method. The scleral reflection method is a method that utilizes the difference in reflectance between the cornea (black eye) and the sclera (white eye). The orientation specifying unit 211 identifies the corneal region by irradiating the eye to be inspected with near-infrared light and measuring the intensity of the reflected light from the eye to be inspected, and the region of the cornea with respect to a predetermined reference position of the eye to be inspected (the region of the cornea ( For example, the orientation of the position of the center of the cornea) is specified as the orientation of the eye to be inspected.

Further, the orientation specifying unit 211 may specify the orientation of the eye to be inspected, for example, by analyzing the image of the anterior eye portion of the eye to be inspected. The orientation specifying unit 211 identifies the corneal region (black eye region) and the scleral region (white eye region) from the acquired brightness information in the anterior segment image of the eye to be inspected, and the corneal region (the corneal region (white eye region) with respect to a predetermined reference position of the eye to be inspected. The orientation of the position of the center of the cornea and the center of the pupil in the corneal region is specified as the orientation of the eye to be inspected.

As described above, the orientation specifying unit 211 analyzes the image of the anterior segment acquired by the photographing optical systems 20L and 20R to obtain the position of the feature point (corneal region, corneal center, pupil center, etc.) of the anterior segment. , It is possible to specify the orientation of the eye to be inspected based on the obtained position.

Further, the orientation specifying unit 211 may specify the orientation of the eye to be inspected by detecting the potential difference between the corneal side and the retina side of the eyeball. For example, the orientation specifying unit 211 identifies the orientation of the eye to be inspected by analyzing the movement of the eyeball from the potential difference obtained by measuring the potential difference of the skin around the eye to be inspected.

The reference orientation specifying unit 212 specifies the reference orientation of the eye to be inspected (each of the left eye to be inspected EL and the right inspected eye ER) corresponding to the presentation distance of the optotype. The reference orientation represents the orientation of the eye to be inspected when the eye position is normal. Similar to the orientation of the eye to be inspected, the reference orientation of the eye to be inspected includes the reference orientation of the visual axis (line of sight) of the eye to be inspected, the reference orientation of the optical axis of the eye to be inspected, and the reference orientation of the eye axis (eyeball axis) of the eye to be inspected. There are a reference direction of the gaze line of the eye to be inspected, a reference direction of the aiming line of the eye to be inspected, and a reference direction of the center line of the pupil of the eye to be inspected.

The reference orientation specifying unit 212 specifies the reference orientation of the left eye subject EL and specifies the reference orientation of the right eye examination ER by the same method as the identification of the orientation of the left eye examination EL.

The reference orientation specifying unit 212 specifies, for example, the line-of-sight direction centered on the eyeball rotation point of the eye to be inspected with a normal eye position as the reference orientation of the eye to be inspected. Such a reference orientation can be specified from the interpupillary distance of the subject and the presentation distance of the optotype.

FIG. 7 shows an explanatory diagram of the eye to be inspected according to the embodiment in the reference direction. FIG. 7 schematically shows the measurement head 100 when viewed from above. In FIG. 7, the same parts as those in FIG. 3 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

The subject gazes at the optotype by converging the left eye subject EL and the right eye subject ER according to the presentation position of the optotype. The reference orientation specifying unit 212 specifies the reference orientation by using trigonometry based on the presentation distance (examination distance) of the optotype and the interpupillary distance of the subject. Assuming that the presentation distance from the left eye EL (or right eye ER) to the presentation position of the optotype is L, the interpupillary distance of the subject is PD, and half of the interpupillary distance is hPD, the reference orientation specific part In 212, the convergence angle θ2 of the left eye-tested EL (or the right-handed eye-tested ER) is calculated by the equation (3). The reference orientation specifying unit 212 specifies the obtained convergence angle θ2 as the reference orientation corresponding to the presentation distance of the optotype. The reference orientation corresponds to the rotation angle of the measurement head 100 (left eye inspection unit 120L, right eye inspection unit 120R).

Further, for example, when the presenting distance L is specified by the examiner operating the examiner controller 300, the control unit 201 is based on the interpupillary distance PD of the examinee and the presented distance L. The rotation angle θ2 of the left eye inspection unit 120L and the right eye inspection unit 120R is obtained. The control unit 201 can rotate each of the left eye inspection unit 120L and the right eye inspection unit 120R in opposite directions around the eyeball rotation point by the rotation angle θ2 obtained by the equation (3). In this case, the convergence angle θ2 specified by the reference orientation specifying unit 212 is substantially offset by the rotation of the left eye inspection unit 120L and the right eye inspection unit 120R.

The presentation distance may be specified by the control unit 201 according to a predetermined inspection sequence, or may be specified by the subject by operating the controller 310 for the subject.

The interpupillary distance acquisition unit 213 acquires the interpupillary distance PD (or hPD which is half of the interpupillary distance). The interpupillary distance acquisition unit 213 acquires the interpupillary distance PD by analyzing, for example, the anterior segment image of the left eye subject EL and the anterior segment image of the right eye subject ER acquired by the photographing optical systems 20L and 20R. do. In this case, the interpupillary distance acquisition unit 213 analyzes the anterior segment image of the left eye subject EL and the anterior segment image of the right eye subject ER acquired by the imaging optical systems 20L and 20R, and analyzes the pupil of the left eye subject EL. The center (center of gravity) position and the center (center of gravity) position of the pupil of the right eye to be inspected ER are specified. The interpupillary distance acquisition unit 213 obtains the distance between the specified pupil center position of the left eye subject EL and the pupil center position of the right eye test ER as the interpupillary distance PD.

Further, the interpupillary distance PD may be a standard distance. The standard distance may be the distance defined by the model eye. Model eyes include Gullstrand's model eyes. In this case, the interpupillary distance acquisition unit 213 acquires the interpupillary distance PD or the like by reading the interpupillary distance PD (or hPD which is half of the interpupillary distance) stored in the storage unit 202 in advance. Further, the interpupillary distance acquisition unit 213 may acquire the interpupillary distance specified based on the operation content for the examiner controller 300 or the subject controller 310.

The difference information generation unit 214 generates difference information representing the difference in the orientation of the eye to be inspected specified by the orientation specifying unit 211 with respect to the reference orientation specified by the reference orientation specifying unit 212. The difference information includes information indicating only the difference in the orientation of the eye to be inspected with respect to the reference orientation, information indicating both the orientation of the reference eye and the orientation of the eye to be inspected, and the like. The difference information may include information representing the components of the difference in the horizontal direction (first direction) and information representing the components of the difference in the vertical direction (second direction orthogonal to the first direction). Further, the difference information may include a value or an image representing only the above difference, a value or an image representing both of the above, and the like.

The difference information generation unit 214 according to the embodiment provides difference information including a reference image representing the reference orientation specified by the reference orientation specifying unit 212 and a orientation image representing the orientation of the eye to be inspected specified by the orientation specifying unit 211. Generate. Further, the difference information generation unit 214 generates a first component image representing a component in the horizontal direction of the difference in the orientation of the eye to be inspected with respect to the reference direction and a second component image representing the component in the vertical direction. That is, the reference image includes a first reference image representing the components in the horizontal direction in the reference direction and a second reference image representing the components in the vertical direction. The orientation image includes a first orientation image showing the component in the horizontal direction of the orientation of the eye to be inspected and a second orientation image showing the component in the vertical direction. As described above, the difference information generation unit 214 may generate difference information including a value representing the reference orientation and a value representing the orientation of the eye to be inspected.

8A and 8B show an example of the difference information according to the embodiment. 8A and 8B show an example of the difference information displayed on the display unit of the examiner controller 300 when the measurement head 100 is rotated according to the congestion of the eye to be inspected.

The display control unit 201A uses the difference information generated by the difference information generation unit 214 together with the anterior segment image of the eye to be inspected acquired by the photographing optical systems 20L and 20R, together with the examiner controller 300 (or the examinee controller 310). ) Can be displayed on the display unit. In FIGS. 8A and 8B, the anterior segment image GL of the left eye subject EL and the anterior segment image GR of the right eye subject ER are displayed on the display unit of the examiner controller 300.

For example, as shown in FIG. 8A, a first display area HL is provided in the vicinity of the upper end portion of the rectangular display area in which the anterior segment image GL is arranged, and a second display area is provided in the vicinity of the right end portion. PL is provided. A third display area HR is provided in the vicinity of the upper end portion of the rectangular display area in which the anterior segment image GR is arranged, and a fourth display area PR is provided in the vicinity of the left end portion.

In the first display area HL, a horizontal component image showing a component in the horizontal direction of the difference in the direction of the left eye subject EL with respect to the reference direction is displayed. It is also possible to display an angle θ representing the line-of-sight direction or a prism value Δ in the vicinity. The horizontal component image includes a reference image R1 representing a component in the horizontal direction of the reference direction and an orientation image D1 representing a component in the horizontal direction of the orientation of the left eye subject EL. In FIG. 8A, since the measurement head 100 is rotated according to the congestion of the eye to be inspected as described above, the horizontal position of the reference image R1 substantially coincides with the horizontal position of the center position of the pupil of the left eye to be inspected EL. Is displayed to do. In the second display area PL, a vertical component image representing a component in the vertical direction of the difference in the orientation of the left eye subject EL with respect to the reference orientation is displayed. The vertical component image includes a reference image R2 representing a component in the vertical direction of the reference direction and an orientation image D2 representing a component in the direction perpendicular to the direction of the left eye subject EL. In the first display area HL and the second display area PL, a value representing a scale or a difference, an image showing the amount of the difference and a direction corresponding to the difference may be displayed.

In the third display area HR, a horizontal component image showing a component in the horizontal direction of the difference in the direction of the right eye to be inspected ER with respect to the reference direction is displayed. The horizontal component image includes a reference image R3 representing a component in the horizontal direction of the reference direction and an orientation image D3 representing a component in the horizontal direction of the direction of the right eye to be inspected ER. In FIG. 8A, since the measurement head 100 is rotated according to the congestion of the eye to be inspected as described above, the horizontal position of the reference image R3 substantially coincides with the horizontal position of the center position of the pupil of the right eye to be inspected ER. Is displayed to do. In the fourth display area PR, a vertical component image representing a component in the vertical direction of the difference in the orientation of the right eye to be inspected ER with respect to the reference orientation is displayed. The vertical component image includes a reference image R4 representing a component in the vertical direction of the reference direction and an orientation image D4 representing a component in the direction perpendicular to the direction of the right eye subject ER. In the third display area HR and the fourth display area PR, a value representing a scale or a difference, an image showing the amount of the difference and a direction corresponding to the difference may be displayed.

Further, for example, as shown in FIG. 8B, in the rectangular display area where the anterior segment image GL is arranged, a scale image showing the horizontal position of the display area and an image showing the pupil center position of the left eye subject EL are displayed. BL may be displayed. Similarly, in the rectangular display area where the anterior segment image GR is arranged, a scale image representing the horizontal position of the display area and an image BR representing the pupil center position of the right eye subject ER may be displayed. .. Even in this case, the display control unit 201A uses the difference information generated by the difference information generation unit 214 together with the anterior eye portion image of the eye to be inspected acquired by the photographing optical systems 20L and 20R, together with the examiner controller 300 (or the examiner to be inspected). It can be displayed on the display unit of the user controller 310).

The position specifying unit 215 specifies a position (or a range including the position) in the optotype presenting area of the LCD 11 corresponding to the orientation of the eye to be inspected specified by the orientation specifying unit 211. For example, the position specifying unit 215 determines a position where a straight line extending from a predetermined reference position of the eyeball (for example, the rotation point of the eyeball) in the direction of the eye to be inspected specified by the orientation specifying unit 211 intersects the optotype presentation area of the LCD 11. Ask.

Further, when the eye to be inspected is facing the front, it may be assumed that a straight line extended from a predetermined reference position of the eyeball (for example, the rotation point of the eyeball) passes through the central position in the optotype presentation area of the LCD 11. .. In this case, the storage unit 202 stores in advance the displacement (displacement direction and displacement amount) from the center position according to the direction of the eye to be inspected. The position specifying unit 215 reads out the displacement stored in the storage unit 202 according to the obtained orientation of the eye to be inspected, and is the center in the optotype presenting area based on the read out displacement and the display distance of the optotype. It is possible to obtain the position in the optotype presenting area of the LCD 11 with reference to the position.

As described above, the position specifying unit 215 obtains the obtained position in the optotype presenting area of the LCD 11 as the gaze position of the eye to be inspected. When the gaze position of the eye to be inspected is obtained, the display control unit 201A displays the optotype image representing the optotype presented in the optotype presenting area of the LCD 11 in the optotype presenting area specified by the position specifying unit 215. The position image showing the position is superimposed and displayed on the display unit of the examiner controller 300. The position image includes a point image showing a position in the optotype presenting area specified by the position specifying unit 215, an image showing a range including the position, an image indicating the position, and the like.

FIG. 9 shows another example of the difference information according to the embodiment. In FIG. 9, the same parts as those in FIG. 8A are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

The display control unit 201A superimposes the position image on the optotype image representing the optotype presented in the optotype presentation area of the LCD 11 together with the anterior segment image and the difference information shown in FIG. 8A, and superimposes the position image on the examiner controller 300. It is possible to display it on the display unit. In FIG. 9, the optotype image (perspective image) SL representing the optotype (fixed optotype) presented to the left eye subject EL is arranged below the anterior segment image GL, and the visual field presented to the right eye subject ER. An optotype image (perspective image) SR representing a marker is arranged below the anterior segment image GR. The display control unit 201A superimposes the position image QL on the optotype image SL and displays it on the display unit of the examiner controller 300, and superimposes the position image QR on the optotype image SR and displays it on the display unit of the examiner controller 300. Let me.

The optotype presenting optical system 10L is controlled by the optotype control unit 201B and corresponds to a position corresponding to a predetermined inspection distance from the left eye subject EL (apparent position separated from the left eye subject EL by a predetermined distance). ) Can be presented with a left gaze target. Similarly, the optotype presenting optical system 10R is controlled by the optotype control unit 201B and corresponds to a position corresponding to the above-mentioned examination distance from the right eye-inspected ER (only the above-mentioned predetermined distance from the right-inspected ER). It is possible to present the right gaze target at a distant apparent position). Each of the left gaze target and the right gaze target may be mobile.

The display control unit 201A superimposes the gaze target image TL on the optotype image SL at a position corresponding to the presentation position of the left gaze target and displays it on the display unit of the examiner controller 300. Further, the display control unit 201A superimposes the gaze target image TR on the optotype image SR at a position corresponding to the presentation position of the right gaze target and displays it on the display unit of the examiner controller 300.

The refractive power calculation unit 216 calculates the objective value by a known method. For example, the refractive power calculation unit 216 knows the shape of the ring optotype image acquired by receiving the return light of the ring-shaped measurement luminous flux projected on the fundus Ef by the reflex measurement optical systems 40L and 40R by the CCD 21. The objective value is obtained by analyzing with the method.

The characteristic information generation unit 220 generates characteristic information representing the characteristics of each of the left eye-tested EL and the right-sided eye-tested ER.

The accommodation power characteristic information generation unit 220A generates accommodation power characteristic information representing the accommodation power characteristics of each of the left eye test EL and the right eye test ER. The accommodation power characteristic is a characteristic representing a change in the accommodation power of the eye to be inspected with respect to a change in the presentation position of the optotype. For example, the control unit 201 causes the optotype presenting optical systems 10L and 10R to change the optotype presentation distance, and causes the refraction measurement optical systems 40L and 40R and the refractive power calculation unit 216 to measure the refractive power a plurality of times. The accommodation power characteristic information generation unit 220A generates characteristic information representing the relationship between the presentation distance of the optotype and the refractive power as shown in FIG. 10 based on the data acquired by the control performed by the control unit 201. .. The display control unit 201A can display the relational information generated by the accommodation power characteristic information generation unit 220A on the display unit of the examiner controller 300.

The rotation characteristic information generation unit 220B generates rotation characteristic information representing the rotation characteristics of each of the left eye test EL and the right eye test ER. The rotation characteristic is a characteristic representing a change in the rotation angle of the eye to be inspected with respect to a change in the rotation angle of the measurement head 100. The control unit 201 executes the change of the target presentation distance by the optotype presentation optical systems 10L and 10R and the rotation of the left eye inspection unit 120L and the right eye inspection unit by the rotation mechanisms 112L and 112R in parallel. The orientation specifying unit 211 is made to specify the orientation of the eye to be inspected a plurality of times. The rotation characteristic information generation unit 220B is based on the data acquired by the control performed by the control unit 201, the presentation distance of the optotype as shown in FIG. 11, or the left eye inspection unit 120L and the right eye inspection unit. Relationship information representing the relationship between the rotation angle of 120R and the orientation of the eye to be inspected is generated. The display control unit 201A can display the relationship information generated by the rotation characteristic information generation unit 220B on the display unit of the examiner controller 300.

In addition to the above-mentioned control, the control device 200 executes all operation control and data processing of the ophthalmologic examination device 1.

The function of the first optotype presenting unit 122L is realized by the optotype presenting optical system 10L included in the left eye inspection unit 120L. The function of the second optotype presenting unit 122R is realized by the optotype presenting optical system 10R included in the inspection unit 120R for the right eye.

The function of the first objective measurement unit 123L is realized by the reflex measurement optical system 40L and the kerato measurement optical system 50L included in the left eye inspection unit 120L. The function of the second objective measurement unit 123R is realized by the reflex measurement optical system 40R and the kerato measurement optical system 50R included in the right eye inspection unit 120R.

The optotype presenting optical systems 10L and 10R are examples of the “objective target presenting unit” according to the embodiment. The photographing optical systems 20L and 20R are examples of the “photographing unit” according to the embodiment. The display unit of the examiner controller 300 (or the examinee controller 310) is an example of the "display means" according to the embodiment. The optotype image SL is an example of an optotype image representing the “left optotype” according to the embodiment. The optotype image SR is an example of an optotype image representing the “right optotype” according to the embodiment. The reference image R1, the orientation image D1, the reference image R2, and the orientation image D2 are examples of the "left difference information" according to the embodiment. The reference image R3, the orientation image D3, the reference image R4, and the orientation image D4 are examples of the "right difference information" according to the embodiment. The alignment optical system 30L, 30R, the reflex measurement optical system 40L, 40R, or the optical system that projects spot light is an example of the “projection system” according to the embodiment. The refraction measurement optical systems 40L and 40R and the refractive power calculation unit 216 are examples of the “refractive power measurement unit” according to the embodiment. The accommodation characteristic information generation unit 220A is an example of the "first relational information generation unit" according to the embodiment. The left eye inspection unit 120L and the right eye inspection unit 120R are examples of the "measurement unit" according to the embodiment. The rotation characteristic information generation unit 220B is an example of the “second relational information generation unit” according to the embodiment.

[Operation example]
Next, the operation of the ophthalmologic examination apparatus 1 according to the embodiment will be described.

FIG. 12 shows an overall flow chart of an operation example of the ophthalmologic examination apparatus 1.

(S1)
Upon receiving a predetermined operation on the examiner controller 300 or the examinee controller 310, the control device 200 starts the operation. The subject fixes his face on a forehead pad (not shown) so that objective measurements and subjective tests can be performed. The position of the forehead rest itself may be adjusted automatically or manually. The control device 200 performs alignment for the left and right eyes. That is, the control device 200 executes the alignment of the optical system of the left eye inspection unit 120L with respect to the left eye subject EL by the alignment optical system 30L. Further, the control device 200 executes the alignment of the optical system of the right eye inspection unit 120R with respect to the right eye test ER by the alignment optical system 30R.

(S2)
The control device 200 executes the kerato measurement as described above for each of the left eye-tested EL and the right-eye-tested ER by the kerato measurement optical systems 50L and 50R. The results of the kerato measurement for each of the left eye-tested EL and the right-handed eye-tested ER are stored in the storage unit 202.

(S3)
The control device 200 executes the reflex measurement as described above for each of the left eye test EL and the right eye test ER by the reflex measurement optical systems 40L and 40R. The results of the ref measurement for each of the left eye-tested EL and the right-handed eye-tested ER are stored in the storage unit 202.

(S4)
The control device 200 controls the optotype presenting optical systems 10L and 10R to display the optotypes selected by the examiner or the control device 200 on the LCD 11 of the optotype presenting optical systems 10L and 10R. Thereby, the optotype is presented to the subject. The subject responds to the optotype. Upon receiving the input of the response content, the control device 200 performs further control and calculation of the subjective test value. The processing content of S4 will be described later.

(S5)
The control device 200 determines at least one of the result of the kerato measurement obtained in S2, the result of the reflex measurement obtained in S3, and the result of the subjective test obtained in S4 for the examiner controller 300 or the subject. It is displayed on the display unit of the controller 310. This completes the operation of the ophthalmologic examination device 1 (end).

FIG. 13 shows a flow chart of an operation example of S4 of FIG. FIG. 13 shows a flow chart of an operation example of the ophthalmologic examination apparatus 1 when performing a long-distance subjective examination or a near-distance subjective examination.

(S11)
First, the control unit 201 sets the presentation distance of the optotype. The presentation distance may be specified by an operation on the examiner controller 300 or the examinee controller 310. Further, the control device 200 may set the presentation distance according to a predetermined measurement sequence.

(S12)
The optotype control unit 201B causes the optotype presenting optical systems 10L and 10R to present a predetermined optotype at a position where the distance between the eye to be inspected and the optotype becomes the presentation distance set in S11.

(S13)
The control unit 201 causes the reference orientation specifying unit 212 to specify the reference orientation of the left eye subject EL and the reference orientation of the right eye examination ER. The reference orientation specifying unit 212 uses the equation (3) from the presentation distance set in S11 and half the interpupillary distance of the subject as the reference orientation of the left eye subject EL and the reference orientation of the right eye examination ER. The convergence angle of the left eye subject EL and the convergence angle of the right eye examination ER are obtained. At this time, the interpupillary distance of the subject may be a predetermined standard distance, or is between the pupil center (center of gravity) position of the left eye EL and the pupil center (center of gravity) position of the right eye ER. It may be obtained by measuring the distance separately.

(S14)
The control unit 201 causes the orientation specifying unit 211 to specify the orientation of the left eye subject EL and the orientation of the right eye examination ER. For example, the orientation specifying portion 211 acquires and acquires an anterior segment image of the left eye subject EL in which an infrared parallel light flux is projected onto the left eye subject EL to depict a virtual image on a spot formed inside the cornea. Analyze the anterior segment image. The orientation specifying unit 211 specifies the orientation of the position of the center of the cornea with respect to the eyeball rotation point of the left eye EL to be inspected obtained by analysis as the orientation of the left eye EL to be inspected. Similarly, the orientation specifying portion 211 projects an infrared parallel light flux onto the right eye subject ER to acquire an anterior segment image of the right eye subject ER in which a virtual image on a spot formed inside the cornea is depicted. The acquired anterior segment image is analyzed. The orientation specifying unit 211 specifies the orientation of the position of the center of the cornea with respect to the eyeball rotation point of the right eye subject ER obtained by analysis as the orientation of the right eye subject ER.

(S15)
The control unit 201 determines the gaze position (or a range including the position) in the optotype presentation area of the LCD 11 of the left eye inspection unit 120L based on the orientation of the left eye EL specified in S14. To specify. Similarly, the control unit 201 positions the gaze position (or a range including the position) in the optotype presentation area of the LCD 11 of the right eye inspection unit 120R based on the orientation of the right eye test ER specified in S14. Have the specific part 215 specify.

(S16)
The display control unit 201A positions the left eye EL and the right eye ER in the optotype presenting area specified in S15 on the optotype image representing the optotype presented in the optotype presenting area of the LCD 11. The position image representing the above is superimposed and displayed on the display unit of the examiner controller 300. As a result, as shown in FIG. 9, the position images QL and QR are superimposed and displayed on the optotype images SL and SR, and the gaze position of the examiner or the subject can be confirmed. At this time, the optotype control unit 201B may perform control to make the optotype corresponding to the position in the optotype presentation area of the LCD 11 specified in S15 identifiable. For example, the optotype control unit 201B changes the display color of the optotype corresponding to the position, displays the optotype corresponding to the position so as to surround it with a frame, or points to the optotype corresponding to the position. Display an image (arrow image).

(S17)
Subsequently, the control unit 201 causes the difference information generation unit 214 to generate difference information representing the difference in the orientation of the eye to be inspected specified in S14 with respect to the reference orientation specified in S13. Specifically, the difference information generation unit 214 generates difference information representing the difference in the direction of the left eye subject EL with respect to the reference direction of the left eye test EL. Similarly, the difference information generation unit 214 generates difference information representing the difference in the direction of the right eye test ER with respect to the reference direction of the right eye test ER.

The difference information generation unit 214 generates a first component image representing a component in the horizontal direction of the difference and a second component image representing a component in the vertical direction for each of the left eye test EL and the right eye test ER. The first component image of the left eye subject EL includes a reference image R1 representing a component in the horizontal direction of the reference direction of the left eye test EL and an orientation image D1 representing a component in the horizontal direction of the direction of the left eye test EL. The second component image of the left eye subject EL includes a reference image R2 representing a component in the vertical direction of the reference direction of the left eye test EL and an orientation image D2 representing a component in the direction perpendicular to the direction of the left eye test EL. The first component image of the right eye test ER includes a reference image R3 representing a component in the horizontal direction of the right eye test ER in the reference direction and an orientation image D3 representing the component in the horizontal direction of the direction of the right eye test ER. The second component image of the right eye test ER includes a reference image R3 representing a component in the vertical direction of the reference direction of the right eye test ER and an orientation image D4 representing a component in the direction perpendicular to the direction of the right eye test ER. As shown in FIG. 9, the display control unit 201A displays the reference images R1 and R2 and the orientation images D1 and D2 on the display unit of the examiner controller 300 together with the anterior eye portion image of the left eye subject EL. Further, as shown in FIG. 9, the display control unit 201A displays the reference images R3 and R4 and the orientation images D3 and D4 on the display unit of the examiner controller 300 together with the anterior eye portion image of the right eye subject ER. This completes the operation of the ophthalmologic examination device 1 (end).

Thereby, the examiner can confirm the reference orientation of the eye to be inspected and the orientation of the eye to be inspected during the subjective examination. At this time, the examiner can confirm the relationship between the rotation state of the eye to be inspected and the fusion state of the chief complaint by having the subject answer the fusion state. For example, it is possible to observe the eye position at the time of measuring the convergence and divergence force while checking the adjustment state.

Further, while changing the presentation position of the optotype from a distance to a near position, the optometry characteristic information as shown in FIG. 10 can be acquired, or the rotation characteristic information as shown in FIG. 11 can be acquired. The person can confirm the visual function of the eye to be inspected in detail.

FIG. 14 shows an operation flow chart of the ophthalmologic examination device 1 for acquiring accommodation force characteristic information according to the embodiment.

(S21)
First, the control unit 201 sets the presentation distance of the optotype. The presentation distance may be specified by an operation on the examiner controller 300 or the examinee controller 310. Further, the control device 200 may set the presentation distance according to a predetermined measurement sequence.

(S22)
The optotype control unit 201B causes the optotype presenting optical systems 10L and 10R to start presenting a predetermined optotype at a position where the distance between the eye to be inspected and the optotype becomes the presentation distance set in S21.

(S23)
For example, in the reflex measurement optical systems 40L and 40R, the control unit 201 projects a ring-shaped measurement luminous flux onto the fundus of the eye for each of the left eye-tested EL and the right-eye-tested ER, and outputs the return light of the projected ring-shaped measurement luminous flux to the CCD 21. To receive light. The control unit 201 causes the refractive power calculation unit 216 to analyze the shape of the ring optotype image acquired by the CCD 21 by a known method to calculate the objective value as the adjustment force.

(S24)
The control unit 201 determines whether or not to finish the acquisition of the accommodation force. The accommodation power characteristic information is obtained by measuring the accommodation power within a predetermined presentation distance range. Therefore, the control unit 201 can determine whether or not the acquisition of the accommodation force is completed by determining whether or not the present presentation distance of the optotype is within the range of the predetermined presentation distance. be. When it is determined that the acquisition of the accommodation power is completed (S24: Y), the operation of the ophthalmologic examination device 1 shifts to S26. When it is determined that the acquisition of the accommodation power characteristic information is not completed (S24: N), the operation of the ophthalmologic examination device 1 shifts to S25.

(S25)
When it is determined that the acquisition of the accommodation force is not completed (S24: N), the optotype control unit 201B controls the LCD 11 so that the optotype is presented at a position where the presentation position is closer by a predetermined step in the near direction. do. The operation of the ophthalmologic examination device 1 shifts to S23.

(S26)
When it is determined that the acquisition of the accommodation force is completed (S24: Y), the control unit 201 tells the accommodation power characteristic information generation unit 220A the accommodation power characteristic information indicating the accommodation power characteristics of the left eye subject EL and the right eye test ER respectively. To generate. The display control unit 201A causes the display unit of the examiner controller 300 to display accommodation force characteristic information indicating the relationship between the presentation distance of the optotype and the accommodation force as shown in FIG. This completes the operation of the ophthalmologic examination device 1 (end).

For example, in FIG. 10, the accommodation force follows the presentation position (fixation position) of the optotype up to the presentation position K1, but the accommodation force follows the presentation position of the optotype when the subject approaches the eye to be examined beyond the presentation position K1. You will not be able to. As a result, it becomes possible to determine whether or not there is a possibility of presbyopia based on the presentation position of the optotype while confirming the relationship between the rotational state of the eye to be inspected and the fusion state of the chief complaint.

FIG. 15 shows an operation flow chart of the ophthalmologic examination apparatus 1 for acquiring the rotation characteristic information according to the embodiment.

(S31)
First, the control unit 201 sets the presentation distance of the index. The presentation distance may be specified by an operation on the examiner controller 300 or the examinee controller 310. Further, the control device 200 may set the presentation distance according to a predetermined measurement sequence.

(S32)
The optotype control unit 201B causes the optotype presenting optical systems 10L and 10R to start presenting a predetermined optotype at a position where the distance between the eye to be inspected and the optotype becomes the presentation distance set in S31.

(S33)
The control unit 201 causes the calculation unit 210 (reference orientation specifying unit 212) to calculate the rotation angle of the measurement head using the equation (3). The interpupillary distance of the subject used in the formula (3) may be a predetermined standard value or may be obtained by measuring separately.

(S34)
The control unit 201 rotates the left eye inspection unit 120L and the right eye inspection unit 120R by the rotation angle obtained in S33 by controlling the rotation mechanisms 112L and 112R.

(S35)
Subsequently, the control unit 201 causes the orientation specifying unit 211 to specify the orientation of the left eye EL to be inspected and the orientation of the right eye to be inspected ER (rotation angle of the eye to be inspected), as in S14, for example.

(S36)
The control unit 201 determines whether or not to finish the acquisition of the rotation angle. The rotation characteristic information is obtained by measuring the rotation angle of the eye to be inspected within a predetermined presentation distance range. Therefore, the control unit 201 can determine whether or not the acquisition of the rotation angle is completed by determining whether or not the present presentation distance of the optotype is within the range of the predetermined presentation distance. be. When it is determined that the acquisition of the rotation angle is completed (S36: Y), the operation of the ophthalmologic examination device 1 shifts to S36. When it is determined that the acquisition of the rotation angle is not completed (S36: N), the operation of the ophthalmologic examination device 1 shifts to S37.

(S37)
When it is determined that the acquisition of the rotation angle is not completed (S36: N), the optotype control unit 201B controls the LCD 11 so that the optotype is presented at a position where the presentation position is closer by a predetermined step in the near direction. do. The operation of the ophthalmologic examination device 1 shifts to S33.

(S38)
When it is determined that the acquisition of the rotation angle is completed (S36: Y), the control unit 201 causes the rotation characteristic information generation unit 220B to generate rotation characteristic information representing the rotation characteristics of each of the left eye subject EL and the right eye examination ER. .. The display control unit 201A causes the display unit of the examiner controller 300 to display rotation characteristic information indicating the relationship between the rotation angle of the measurement head 100 and the rotation angle of the eye to be inspected as shown in FIG. This completes the operation of the ophthalmologic examination device 1 (end).

For example, in FIG. 11, both eyes can be focused up to the rotation angle ω2 of the measurement head 100 to gaze at the optotype, but when the rotation angle ω2 is exceeded (when the display distance of the optotype becomes short), the right eye to be inspected ER Can no longer follow. That is, it becomes possible to determine that there is a possibility that there is an abnormality in the convergence function of the right eye-tested ER. In this way, while confirming the relationship between the rotation state of the eye to be inspected and the fusion state of the chief complaint, whether or not the convergence function of both eyes is normal based on the rotation angle (presentation position of the optotype) of the measurement head 100. Can be judged.

In the embodiment, a separate optotype is presented to each of the left eye EL and the right eye ER, but a single optotype is presented to each of the left eye EL and the right eye ER. You may.

[effect]
The effect of the ophthalmologic examination apparatus according to the embodiment will be described.

The ophthalmologic examination apparatus (ophthalmological examination apparatus 1) according to the embodiment includes an optotype presenting unit (objective object presenting optical system 10L, 10R), an imaging unit (imaging optical system 20L, 20R), and an orientation specifying unit (orientation specifying unit). 211) and a display control unit (display control unit 201A). The optotype presenting unit presents an optotype to the eye to be inspected (left eye to be inspected EL, right inspected eye ER). The imaging unit photographs the anterior segment of the eye to be inspected. The orientation specifying portion identifies the orientation of the eye to be inspected. The display control unit has acquired difference information representing the difference in the orientation of the eye to be inspected specified by the orientation specifying unit with respect to the reference orientation corresponding to the presentation distance of the optotype presented by the optotype presenting unit. It is displayed on the display means (display unit of the examiner controller 300) together with the anterior segment image (anterior segment image GL, GR) of the eye to be inspected.

According to such a configuration, the orientation of the eye to be inspected to which the optotype is presented is specified, and the difference information indicating the difference in the orientation of the eye to be inspected with respect to the reference orientation corresponding to the presentation distance of the optotype is before the eye to be inspected. Since the display means is displayed together with the eye image, the relationship between the rotation state of the eye to be inspected and the fusion state of the chief complaint can be easily confirmed. For example, it is possible to observe the eye position at the time of measuring the convergence and divergence force while checking the adjustment state.

Further, in the ophthalmic examination apparatus according to the embodiment, the optotype presenting unit presents the left optotype to the left eye to be inspected (left eye to be inspected EL) and the right optotype to the right eye to be inspected (right eye to be inspected ER). Presented, the imaging unit photographs the anterior segment of the left eye and the anterior segment of the right eye, and the orientation-specific portion identifies the orientation of the left eye and the right eye. The display control unit has acquired left difference information representing the difference in the orientation of the left eye to be inspected specified by the orientation specifying unit with respect to the reference orientation corresponding to the presentation distance of the left optotype. Right difference information, which is displayed on the display means together with the image of the anterior segment of the left eye and represents the difference in the orientation of the right eye specified by the orientation specific portion with respect to the reference orientation corresponding to the presentation distance of the right optotype. It may be displayed on the display means together with the anterior segment image of the right eye to be inspected acquired by the photographing unit.

According to such a configuration, for both eyes, the orientation of the eye to be inspected to which the optotype is presented is specified, and the difference information representing the difference in the orientation of the eye to be inspected with respect to the reference orientation corresponding to the presentation distance of the optotype is obtained. Since the display means is displayed together with the image of the anterior segment of the eye to be inspected, the relationship between the rotational state of both eyes and the fusion state of the chief complaint can be easily confirmed.

Further, the ophthalmologic examination apparatus according to the embodiment may include a reference orientation specifying unit (reference orientation specifying unit 212) that specifies the reference orientation based on the presentation distance.

According to such a configuration, since the reference orientation is specified based on the presentation distance of the optotype, it is possible to obtain the difference information representing the difference in the orientation of the eye to be inspected with respect to the reference orientation by a simple process. ..

Further, the ophthalmologic examination apparatus according to the embodiment includes an interpupillary distance acquisition unit (interpupillary distance acquisition unit 213) for acquiring the interpupillary distance of the subject, and the reference orientation specific unit is used for the presentation distance and the interpupillary distance. Based on this, the reference orientation may be specified using the triangular method.

According to such a configuration, the interpupillary distance of the subject is acquired, and the reference orientation is specified by the trigonometry based on the presentation distance of the optotype and the acquired interpupillary distance. It is possible to obtain the difference information representing the difference in the orientation of the optometry with high accuracy by a simple process.

Further, in the ophthalmologic examination apparatus according to the embodiment, the orientation specific portion analyzes the image of the anterior segment acquired by the imaging unit to obtain the position of the feature point of the anterior segment, and the eye to be inspected based on the determined position. You may specify the orientation of.

According to such a configuration, the orientation of the eye to be inspected is specified based on the position of the feature point of the image of the anterior segment of the eye to be inspected, so that the difference information can be obtained with high accuracy by simple processing. Become.

Further, the ophthalmologic examination apparatus according to the embodiment includes a projection system (alignment optical system 30L, 30R, a ref measurement optical system 40L, 40R, or an optical system that projects spot light) that projects a luminous flux onto the eye to be inspected, and is a direction specifying unit. May analyze the anterior segment image acquired by the photographing unit to determine the position of the image based on the luminous flux, and specify the orientation of the eye to be inspected based on the determined position.

According to such a configuration, the orientation of the eye to be inspected is specified based on the position of the image based on the luminous flux from the projection system drawn on the acquired anterior segment image, so that the difference information is simply processed. It is possible to obtain with high accuracy.

Further, in the ophthalmologic examination apparatus according to the embodiment, the difference information includes a first component image representing a component in the first direction (horizontal direction) of the difference and a component in the second direction (vertical direction) orthogonal to the first direction. It may include a second component image to be represented.

According to such a configuration, since the display means displays an image showing the difference information in the first direction and the second direction, it is possible to easily confirm the component of the difference.

Further, in the ophthalmologic examination apparatus according to the embodiment, the difference information may include reference images (reference images R1 to R4) representing the reference orientation and orientation images (orientation images D1 to D4) representing the orientation of the eye to be inspected. ..

According to such a configuration, since the difference information is represented by the reference image and the orientation image, it is possible to easily confirm the displacement direction and the displacement amount of the orientation of the eye to be inspected with respect to the reference orientation.

Further, in the ophthalmic examination apparatus according to the embodiment, the reference image includes a first reference image (reference images R1 and R3) representing a component in the first direction in the reference direction and a component in the second direction orthogonal to the first direction. The orientation image includes the second reference image (reference images R2, R4) to be represented, and the orientation image includes the first orientation image (direction images D1, D3) representing the component in the first direction of the orientation of the eye to be examined and the component in the second direction. A second orientation image (orientation images D2, D4) representing the above may be included.

According to such a configuration, the difference information is represented by the reference image and the orientation image in each of the first direction and the second direction. Therefore, the component in the displacement direction and the component of the displacement amount in the direction of the eye to be examined with respect to the reference direction. And can be easily confirmed.

Further, in the ophthalmologic examination apparatus according to the embodiment, the difference information may include a value indicating the reference orientation and a value indicating the orientation of the eye to be inspected.

With such a configuration, it is possible to easily confirm the displacement direction and the displacement amount of the direction of the eye to be inspected with respect to the reference direction.

Further, the ophthalmologic examination apparatus according to the embodiment is a position specifying unit (position specifying unit 215) that specifies a position in the target target presenting area by the optotype presenting unit based on the orientation of the eye to be inspected specified by the orientation specifying unit. ) Is included, and the display control unit includes, in the optotype image (optimal image SR, SL) representing the optotype presented to the eye to be inspected by the optotype presenting unit, the position image representing the position specified by the position specifying unit. (Position image QL, QR) may be superimposed and displayed on the display means.

With such a configuration, it is possible to easily confirm the relationship between the rotation state of the eye to be inspected and the fusion state of the chief complaint as well as the gaze position of the eye to be inspected.

Further, in the ophthalmic examination apparatus according to the embodiment, the optotype presenting unit can change the display distance of the optotype, and the refractive power measuring unit (ref measurement optical system 40L, 40R and refraction) for measuring the refractive power of the eye to be inspected. It is acquired by the force calculation unit 216), the control unit (control unit 201) that causes the refractive power measurement unit to measure the refractive power multiple times while changing the presentation distance by the optometric display unit, and the control performed by the control unit. Display control including a first relational information generation unit (accommodative power characteristic information generation unit 220A) that generates first relational information (accommodative power characteristic information) representing the relationship between the presented distance and the refractive power based on the collected data. The unit may display the first relationship information generated by the first relationship information generation unit on the display means.

With such a configuration, it is possible to confirm the relationship between the rotation state of the eye to be inspected and the fusion state of the chief complaint, and to confirm the information indicating the relationship between the presentation distance of the optotype and the adjusting power. As a result, for example, it becomes possible to determine whether or not there is a possibility of presbyopia based on the presentation position of the optotype.

Further, in the ophthalmologic examination apparatus according to the embodiment, the optotype presenting unit can change the display distance of the optotype, and the measurement unit (left eye examination unit 120L, right) in which the optotype presenting unit and the imaging unit are housed. The optometry unit 120R), the rotating mechanism (rotating mechanism 112L, 112R) that rotates the measuring unit, the change of the presentation distance by the optotype presenting unit, and the rotation of the measuring unit by the rotating mechanism are performed in parallel. The control unit (control unit 201) that causes the orientation identification unit to specify the orientation of the eye to be inspected multiple times, and the presentation distance or rotation of the measurement unit based on the data acquired by the control performed by the control unit. The display control unit includes a second relationship information generation unit (rotation characteristic information generation unit 220B) that generates a second relationship information (rotation characteristic information) representing the relationship between the angle and the orientation of the eye to be inspected, and the display control unit has a second relationship. The second relational information generated by the information generation unit may be displayed on the display means.

With such a configuration, it is possible to confirm the relationship between the rotation state of the eye to be inspected and the fusion state of the complaint, and to confirm the information indicating the relationship between the rotation angle of the measuring unit and the orientation of the eye to be inspected. become. Thereby, for example, it is possible to determine whether or not the convergence function of the optotype is normal based on the rotation angle (presentation position of the optotype) of the measurement unit.

[others]
The above-described embodiment is not limited to the configuration of the optical system described in FIG. 3, the configuration of the control system described in FIGS. 4 and 5, and the control contents. For example, objective measurement may include objective measurement for measuring a value relating to the eye to be inspected and imaging for acquiring an image of the eye to be inspected. Such objective measurements include, for example, objective refraction measurement, corneal shape measurement, intraocular pressure measurement, fundus photography, and OCT (Optical Coherence Tomography) measurement using an OCT method. Further, the subjective test includes, for example, a subjective refraction measurement such as a distance test, a near test, a contrast test, and a glare test, and a visual field test.

Further, the ophthalmologic examination apparatus according to the embodiment can perform distance examination, near-distance examination, contrast examination, glare examination and the like as subjective examinations, and objective refraction measurement and corneal shape measurement as objective measurements. , It may be a device capable of performing OCT measurement and the like. In the OCT measurement, eyeball information representing the structure of the eye to be inspected, such as the axial length, corneal thickness, anterior chamber depth, and lens thickness, may be acquired.

The configuration described above is only an example for preferably carrying out the present invention. Therefore, any modification (omission, substitution, addition, etc.) within the scope of the gist of the present invention can be appropriately applied.

1 Ophthalmic examination device 10L, 10R Optical system for presenting optotypes 20L, 20R Imaging optical system 100 Measuring head 120L Examination unit for left eye 120R Examination unit for right eye 200 Control device 201A Display control unit 201B Display control unit 201B Directional identification unit 212 Reference orientation identification unit 213 Pupillary distance acquisition unit 214 Difference information generation unit 215 Position identification unit 216 Optical power calculation unit 220 Characteristic information generation unit 220A Adjusting force characteristic information generation unit 220B Rotation characteristic information generation unit

Claims (10)

An optotype presenting unit that presents an optotype to the eye to be examined at a changeable presentation distance,
An imaging unit that photographs the anterior segment of the eye to be inspected,
The orientation specifying part that specifies the orientation of the eye to be inspected,
The anterior segment image of the eye to be inspected acquired by the photographing unit is displayed in the display area of the display means, and the horizontal component in the reference direction corresponding to the presentation distance of the optotype presented by the optotype presenting unit is displayed. first display provided above identified a first direction image representing water Heisei fraction of the eye direction in the vicinity of the upper end portion of the display area by the orientation identification section with respect to the first reference image and the reference direction indicative A second reference image representing the vertical component of the reference orientation and a second orientation image representing the vertical component of the orientation of the eye to be inspected with respect to the reference orientation are displayed in the area in the vicinity of the left end portion or the right end portion of the display area. A display control unit that displays in the provided second display area,
Ophthalmic examination equipment including. The optotype presenting unit presents the left optotype to the left eye and presents the right optotype to the right eye.
The imaging unit photographs the anterior segment of the left eye to be inspected and the anterior segment of the right eye to be inspected.
The orientation specifying portion identifies the orientation of the left eye to be inspected and the orientation of the right eye to be inspected.
The display control unit has acquired left difference information representing the difference in the orientation of the left eye to be inspected specified by the orientation specifying unit with respect to the reference orientation corresponding to the presentation distance of the left optotype. The right that is displayed on the display means together with the image of the anterior segment of the left eye and represents the difference in the orientation of the right eye specified by the orientation specifying portion with respect to the reference orientation corresponding to the presentation distance of the right optotype. The ophthalmologic examination apparatus according to claim 1, wherein the difference information is displayed on the display means together with the anterior segment image of the right eye to be inspected acquired by the imaging unit. The ophthalmologic examination apparatus according to claim 1 or 2, wherein the reference orientation specifying unit for specifying the reference orientation based on the presentation distance is included. Including the interpupillary distance acquisition unit for acquiring the interpupillary distance of the subject,
The ophthalmologic examination apparatus according to claim 3, wherein the reference orientation specifying unit identifies the reference orientation by using a trigonometry based on the presentation distance and the interpupillary distance. The orientation specifying unit analyzes the image of the anterior segment acquired by the photographing unit to determine the position of the feature point of the anterior segment, and identifies the orientation of the eye to be inspected based on the determined position. The ophthalmologic examination apparatus according to any one of claims 1 to 4. It includes a projection system that projects a luminous flux onto the eye to be inspected.
The orientation specifying unit is characterized in that the front eye portion image acquired by the photographing unit is analyzed to obtain the position of the image based on the luminous flux, and the orientation of the eye to be inspected is specified based on the obtained position. The ophthalmologic examination apparatus according to any one of claims 1 to 4. The ophthalmologic examination apparatus according to any one of claims 1 to 6, wherein the display control unit displays a value representing the reference orientation and a value representing the orientation of the eye to be inspected. A position specifying unit that specifies a position in the presentation area of the optotype by the optotype presenting unit based on the orientation of the eye to be inspected specified by the orientation specifying unit is included.
The display control unit superimposes a position image representing the position specified by the position specifying unit on the optotype image representing the optotype presented to the eye to be inspected by the optotype presenting unit. The ophthalmologic examination apparatus according to any one of claims 1 to 7, wherein the ophthalmologic examination apparatus is displayed. The target display unit can change the presentation distance of the target.
A refractive power measuring unit that measures the refractive power of the eye to be inspected,
A control unit that causes the refraction force measuring unit to measure the refractive power a plurality of times while causing the optotype presenting unit to change the presentation distance.
A first relationship information generation unit that generates first relationship information representing the relationship between the presentation distance and the refractive power based on the data acquired by the control performed by the control unit.
Including
The ophthalmology according to any one of claims 1 to 8, wherein the display control unit causes the display means to display the first relational information generated by the first relational information generation unit. Inspection equipment. The target display unit can change the presentation distance of the target.
A measurement unit in which the optotype presenting unit and the photographing unit are stored, and
A rotating mechanism that rotates the measuring unit,
A control unit that causes the orientation specifying unit to specify the orientation of the eye to be inspected a plurality of times while executing the change of the presentation distance by the optotype presenting unit and the rotation of the measuring unit by the rotation mechanism in parallel. ,
Second relationship information generation that generates second relationship information indicating the relationship between the presentation distance or the rotation angle of the measurement unit and the orientation of the eye to be inspected based on the data acquired by the control performed by the control unit. Department and
Including
The ophthalmology according to any one of claims 1 to 9, wherein the display control unit causes the display means to display the second relational information generated by the second relational information generation unit. Inspection equipment.

Images