JP2018166650A - Ophthalmologic apparatus - Google Patents

Abstract

To provide an ophthalmologic apparatus capable of automatically and timely notifying a subject that he or she needs to blink when it is determined that the subject needs to blink in conducting an examination of an eye to be examined of the subject, conducting an appropriate examination of the eye to be examined, and reducing a burden on an examiner conducting optometry work.SOLUTION: An ophthalmologic apparatus includes: an examination part for an objective examination and/or a subjective examination of an eye to be examined; an alignment part for positioning the examination part with respect to the eye to be examined; a display part for displaying examination information; and a control part for controlling the operations of the examination part, the alignment part, and the display part, and acquiring the information on the eye to be examined based on a result of the detection acquired by the examination part. The ophthalmologic apparatus further includes notification means for notifying the subject based on an instruction by the control part when the control part determines that the subject is not blinking and determines that the subject needs to blink in conducting the optometry work.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ophthalmologic apparatus, and more particularly, to an ophthalmologic apparatus that automatically notifies when it is determined that a subject needs to blink for optometry.

  In general, an ophthalmologic apparatus includes an inspection unit that is provided so as to be movable in the left-right direction, the vertical direction, and the front-rear direction with respect to a base unit, It has.

  For example, the alignment unit aligns the position of the inspection unit with the position of the center of the pupil of the eye to be examined or the position of the corneal apex, and the ophthalmologic apparatus is configured to perform measurement in a state where alignment is performed (Patent Document 1). .

  By the way, when the eye of the subject is examined by such an ophthalmologic apparatus and the subject does not firmly open the eyelid, the examination of the eye to be examined is impossible or only insufficient examination is possible. . Therefore, it is necessary for the subject to firmly open the eyelid before starting the optometry work.

  This situation is particularly noticeable when the subject is an elderly person, and the muscular strength of the heel is reduced and it is difficult to open the heel firmly, and the back is bent, As a result, the head is not raised firmly so that the face is directly facing the ophthalmic device, the head is turned forward, and the eye to be examined is not placed at an appropriate position with respect to the ophthalmic device. In some cases, the eye cannot be examined.

  Also, if the subject blinks during the examination, work such as optometry will be hindered, so it is necessary to have the subject blink in advance before starting work such as optometry. is there. Furthermore, since the examinee needs to concentrate on the examination of the eye, the eyes may become tired due to tension before the examination is started, and the eyelid may be closed.

  In such a case, conventionally, the examiner himself made a voice call to guide the subject to blink just before actually starting the operation such as optometry. It is necessary to perform various operations such as operation of the control lever and control panel of the ophthalmologic apparatus, and to call the subject to blink at an appropriate timing while checking the state of the eye to be examined. It was very burdensome and cumbersome.

  Therefore, before work such as optometry is started, an effective inspection is performed by notifying the subject of the necessity of blinking without informing the examiner, and having the subject open the eyelids firmly. In addition, there has been a demand for reducing the burden on the examiner required for preparation for the examination.

From this point of view, the present patent applicant investigated past patent documents and extracted the following related documents.
For example, Patent Document 2 relates to an improvement of an ophthalmologic apparatus that performs an eye examination, and includes an audio announcement device that outputs to the subject and the examiner an indication of the state or abnormality of the ophthalmologic apparatus, an operation procedure, or an output of measurement results. The present invention relates to an ophthalmologic apparatus that performs a voice announcement that automatically notifies the user of a voice.

Patent Document 3 discloses an apparatus that detects eye movement while photographing a subject with a video camera. Furthermore, Patent Document 4 discloses an apparatus for measuring the visual field by detecting the position of the subject's head while obtaining the eye movement while communicating with the subject through a speaker and headphones.
However, even the techniques disclosed in such conventional patent documents cannot solve the above problems.
JP, 2006-159071, A JP 59-85645 A Special table 2008-541909 EP94017B1 publication

  The present invention is for solving such a conventional problem, and the problem was determined that the subject needs to blink when examining the subject's eye. In such a case, an ophthalmologic apparatus capable of automatically informing the subject of the necessity of blinking in a timely manner, enabling a good examination of the subject's eye, and reducing the burden on the examiner's optometry work. It is in.

  In order to achieve the above object, in the first aspect of the present invention, an inspection unit for objective examination and / or subjective examination of an eye to be examined, and an alignment unit that aligns the examination unit with respect to the eye to be examined And a display unit that displays examination information, and a control unit that controls the operations of the examination unit, the alignment unit, and the display unit and that acquires eye information based on the detection result obtained by the examination unit. When the control unit determines that the subject is not blinking when the control unit performs optometry work, and determines that the blink is necessary, the control unit instructs And an informing means for informing the subject based on the above.

  According to a second aspect of the present invention, the examination unit includes an imaging unit that images an anterior eye part of a subject, and the control unit performs an examination based on an anterior eye image captured by the imaging unit. When it is determined that the person needs to blink, the subject is notified via the notification means.

  In the invention according to claim 3, the control unit determines whether it is necessary to perform blinking based on the presence or absence of a ring-shaped light beam projected on the cornea of the eye to be inspected by irradiation with light from the kerato ring light source. Features.

  According to a fourth aspect of the present invention, the controller determines whether or not blinking is necessary depending on whether or not the alignment light spot projected on the cornea of the eye to be examined is irradiated by light from the alignment light source. Features.

  The invention according to claim 5 is characterized in that the control unit determines the necessity of blinking based on the presence or absence of the acquired iris image defect of the subject.

  The invention according to claim 6 is characterized in that the control unit determines the necessity of blinking according to the degree of bleeding due to tears in the anterior segment image.

  The invention according to claim 7 is characterized in that the notifying means is a speaker mounted on a face receiving frame portion provided on the subject side of the ophthalmologic apparatus main body.

  The invention according to claim 8 is characterized in that the notifying means is a fixation target presented to the subject by the optical system.

  The invention according to claim 9 is characterized in that, when the inspection work is completed, the control unit notifies the subject that the optometry work is completed by the notification means.

  The invention according to claim 10 is characterized in that the detection means is a pressure sensor.

  In the invention according to claim 11, the subject's eyelid is opened when the subject is not blinked even when the notification is given by the notification means based on the instruction of the control unit. It is characterized by having an opening mechanism that can be opened.

  In the invention described in claim 12, the opening mechanism includes an arm portion that is engaged with the subject's eyelid, and a drive portion that can pull up the arm portion in the Y-axis direction of the ophthalmologic apparatus. It is characterized by that.

  According to the first to ninth aspects of the present invention, an inspection unit for objective examination and / or subjective examination of the eye to be examined, an alignment unit that aligns the examination unit with respect to the eye to be examined, and examination information And a control unit that controls the operations of the inspection unit, the alignment unit, and the display unit, and acquires eye information based on the detection result obtained by the inspection unit, and the control unit However, when performing the optometry work, when it is determined that the subject is not blinking, and when it is determined that blinking is necessary, a notification that informs the subject based on an instruction from the control unit Because it is equipped with means, it is effective for the subject to open the eyelids firmly by automatically informing the subject of the necessity of blinking before work such as optometry is started. As well as performing Themselves from the monitoring work to determine the degree of opening of the eyelids of the subject is not required, it is possible to reduce the examiner of the burden required for the preparation of the inspection.

  Further, in the invention according to claims 1 to 12, it is detected that the subject puts the jaw on the chin receiving portion, and the control portion has the detecting means placed on the jaw by the subject. If it is confirmed that the subject is seated in front of the ophthalmic apparatus and the chin is placed on the chin rest part, since it is configured to start the optometry work when it is detected, Since the control unit supplies the main power to operate the ophthalmologic apparatus, it is not necessary for the examiner to operate the ophthalmologic work as in the conventional case, and the burden on the examiner can be reduced.

  In addition, if the subject's blink is not detected during the optometry work as described above, the blinking is notified, and if the blink is not detected, the eye opening mechanism is forced. Therefore, even if the examiner is absent at the place where the ophthalmic apparatus is installed, the optometry is performed appropriately and effectively without requiring any operation by the examiner. In addition to being able to perform work, it is possible to perform optometry work more reliably, and the burden on the examiner can be greatly reduced.

  In particular, in the invention according to claim 3, the control unit determines the necessity of blinking according to the loss of the ring-shaped light beam projected on the cornea of the eye to be examined by the irradiation of light from the kerato ring light source. Therefore, the control unit determines the degree of loss of the ring-shaped light beam based on the return light of the ring-shaped light beam, and if the loss of the ring-shaped light beam is large, the eyelid covers the anterior eye segment. It is determined that blinking is necessary, and the subject is automatically notified.

  According to a fourth aspect of the present invention, the control unit determines the necessity of blinking depending on whether or not the alignment light spot projected on the cornea of the eye to be examined is irradiated with light from the alignment light source. Therefore, based on the return light of the alignment light point, the control unit determines that the eyelid covers the anterior eye and blinking is necessary when the alignment light point cannot be recognized. Informs automatically.

  In the invention according to claim 5, since the control unit is configured to determine the necessity of blinking depending on the loss of the iris, the control unit determines the iris image based on the eye information. When it is determined that the deficiency is missing, it is determined whether blinking is necessary, and the subject is automatically notified.

  In the invention according to claim 6, since the control unit is configured to determine the necessity of blinking according to the degree of bleeding due to tears on the anterior eye surface, the control unit, The degree of bleeding on the anterior eye surface is detected based on the eye information, and when it is determined that the degree of bleeding is large, the subject is automatically notified.

  In the invention according to claim 7, since the notification means is a speaker mounted on a face receiving frame portion provided on the subject side of the ophthalmologic apparatus main body, the subject blinks by automatic voice. You can clearly recognize what to do.

  In the invention according to claim 8, since the informing means is a fixation target presented to the subject by the optical system, it is visually confirmed that the subject blinks with the fixed index. recognize.

  Conventionally, it is also unclear when the test will be terminated after the start of the test, and there is a situation in which the subject is tired and burdensome because the tension persists. Even in such a case, it is desirable for the examiner to speak to the subject in a timely manner so as to reduce the burden on the examinee's optometry, but as described above, the examiner can operate the ophthalmologic apparatus. According to the invention of claim 9, when the inspection work is finished, the control unit detects that the optometry work is finished by the notification means. Since it is configured to notify the person, the subject can recognize the end of the optometry work in a timely manner and can reduce the burden on the subject.

  The invention according to claims 11 and 12 further includes an opening mechanism for opening the subject's eyelid when the subject is not blinked even when the notification is made by the notification means. Because it automatically assists in opening the eyelids on the device side, it removes the burden on the examiner and also reduces the burden on the subject, making it possible to perform optometry work more reliably It becomes.

1 is a block diagram schematically showing a configuration of an embodiment of an ophthalmologic apparatus according to the present invention. It is explanatory drawing which shows roughly the structure of one Embodiment of the ophthalmologic apparatus which concerns on this invention. 1 is a perspective view showing an embodiment of an ophthalmologic apparatus according to the present invention, generally showing a configuration of an ophthalmologic apparatus equipped with an opening mechanism, and informing a blink through a speaker. FIG. It is a perspective view which shows one Embodiment of the ophthalmologic apparatus which concerns on this invention, Comprising: It is a figure which shows the state which is alert | reporting the blink with a character in a fixed index. 1 is a diagram illustrating an embodiment of an ophthalmologic apparatus according to the present invention, illustrating an anterior ocular segment image acquired by an image sensor and displayed on a display unit, and operation buttons of the display unit. It is a side view which shows one Embodiment of the ophthalmologic apparatus which concerns on this invention, Comprising: It is a figure which shows the state which the subject uses the opening mechanism. It is a perspective view which shows one Embodiment of the ophthalmic apparatus which concerns on this invention, Comprising: It is a figure which shows the state in which the subject is performing optometry using the ophthalmic apparatus equipped with the opening mechanism. It is a flowchart which shows the flow of the process in 1st Embodiment regarding one Embodiment of the ophthalmic apparatus which concerns on this invention.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

<Overall explanation>
As shown in FIGS. 1 and 2, the ophthalmologic apparatus 40 according to the present embodiment projects an examination light onto the fundus oculi Ef of the eye E and has an optical system that detects return light from the eye E. 100, alignment units 1 and 2 that align the inspection unit 100 with the eye E, a display unit 200 that displays inspection information, and operations of the inspection unit 100, the alignment unit, and the display unit 200 And a control unit 300 that acquires eye information based on the detection result obtained by the inspection unit 100.

  The ophthalmologic apparatus 40 according to the present embodiment can execute an objective test and a subjective test. The objective test is a measurement technique for acquiring information about the eye to be examined mainly using a physical technique without referring to a response from the subject.

  The objective examination includes measurement for obtaining the characteristics of the eye to be examined and photographing for obtaining an image of the eye to be examined. The objective examination includes objective refraction measurement, corneal shape measurement, intraocular pressure measurement, fundus photography, optical coherence tomography (hereinafter referred to as OCT), and the like.

  On the other hand, the subjective examination is a measurement technique for acquiring information using a response from a subject. The subjective examination includes a subjective examination measurement such as a distance examination, a near examination, a contrast examination, and a glare examination, and a visual field examination.

  The ophthalmologic apparatus which concerns on embodiment can perform at least one of arbitrary subjective tests and arbitrary objective tests.

  When optical interference measurement can be performed, the optical interference measurement is used to acquire eyeball information representing the structure of the eye to be examined, such as the axial length, corneal thickness, anterior chamber depth, and lens thickness. In addition, optical interference measurement can be used to acquire an image of the eye to be examined and analysis data.

<Configuration>
1 and 2 show a configuration example of the ophthalmologic apparatus according to the embodiment. The inspection unit 100 applied to the ophthalmologic apparatus 40 according to the present embodiment is an optical system for inspecting the eye E. A Z alignment system 1, an XY alignment system 2, a kerato measurement system 3, a target projection system 4, an observation system 5, a reflex measurement projection system 6, a reflex measurement light receiving system 7, and a processing unit 9 are provided.

(Processing unit 9)
The processing unit 9 controls each unit of the ophthalmologic apparatus 40. The processing unit 9 can execute various arithmetic processes. The processing unit 9 includes a processor. The functions of the processor are, for example, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an ASIC (Application Specific Integrated Circuit), a programmable logic device (for example, SPLD (Simple Programmable L). , FPGA (Field Programmable Gate
Array)) or the like. The processing unit 9 realizes the function according to the present embodiment by, for example, reading and executing a program stored in a storage circuit or a storage device.

(Observation system 5)
The observation system 5 takes a moving image of the anterior segment of the eye E. The light (infrared light) from the anterior segment of the eye E passes through the objective lens 51, passes through the dichroic mirrors 52 and 53, and passes through the aperture of the diaphragm 54. The light that has passed through the aperture of the diaphragm 54 passes through the half mirror 55, passes through the relay lenses 56 and 57, and is imaged on the imaging surface of the imaging element 59 (area sensor) by the imaging lens 58. The imaging element 59 performs imaging and signal output at a predetermined rate.
An output (video signal) of the image sensor 59 is input to the processing unit 9. The processing unit 9 displays the anterior segment image E ′ based on the video signal on the display screen 10 a of the display unit 10. The anterior segment image E ′ is, for example, an infrared moving image. The observation system 5 may include an illumination light source for illuminating the anterior segment.

(Z alignment system 1)
The Z alignment system 1 irradiates the eye E with light (infrared light) for alignment in the optical axis direction (front-rear direction, Z direction) of the observation system 5. The light output from the Z alignment light source 11 is applied to the cornea K of the eye E, reflected by the cornea K, and imaged on the line sensor 13 by the imaging lens 12.
When the position of the corneal apex changes in the front-rear direction, the light projection position on the line sensor 13 changes. The processing unit 9 obtains the position of the corneal apex of the eye E based on the projection position of the light on the line sensor 13, and executes Z alignment based on this.

(XY alignment system 2)
The XY alignment system 2 irradiates the eye E with light (infrared light) for alignment in a direction (left-right direction (X direction), vertical direction (Y direction)) orthogonal to the optical axis of the observation system 5. . The XY alignment system 2 includes an XY alignment light source 21 provided in an optical path branched from the observation system 5 by a half mirror 55. The light output from the XY alignment light source 21 is reflected by the half mirror 55 and is applied to the eye E through the observation system 5. The reflected light from the cornea K is guided to the image sensor 59 through the observation system 5.

  This reflected light image (bright spot image) is included in the anterior segment image E ′. As illustrated in FIG. 1, the processing unit 9 displays the anterior segment image E ′ including the bright spot image Br and the alignment mark AL on the display screen 10 a. When performing XY alignment manually, the examiner performs an operation of moving the optical system so as to guide the bright spot image Br in the alignment mark AL. When the alignment is performed automatically, the processing unit 9 controls a mechanism for moving the optical system so that the displacement of the bright spot image Br with respect to the alignment mark AL is cancelled.

(Kerato measurement system 3)
The kerato measurement system 3 projects a ring-shaped light beam (infrared light) for measuring the shape of the cornea K onto the cornea K. The kerato plate 31 is disposed between the objective lens 51 and the eye E. A kerato ring light source 32 is provided on the back side of the kerato plate 31 (objective lens 51 side).
A ring-shaped light beam is projected onto the cornea K by illuminating the kerato plate 31 with light from the kerato ring light source 32. The reflected light (keratling image) is detected by the image sensor 59 together with the anterior segment image E ′. The processing unit 9 calculates a corneal shape parameter by performing a known calculation based on the keratoling image.

(Target projection system 4)
The target projection system 4 presents various targets such as a fixation target and a subjective test target to the eye E. Light (visible light) output from the light source 41 is applied to the target chart 42. The target chart 42 includes, for example, a transmissive liquid crystal panel, and displays a pattern representing the target.
The light that has passed through the target chart 42 passes through the focusing lens 43 and the VCC lens 44, is reflected by the reflecting mirror 45, is reflected by the dichroic mirror 53, passes through the dichroic mirror 52, and passes through the objective lens 51. Projected onto the fundus oculi Ef. The light source 41 and the target chart 42 are integrally movable in the optical axis direction.

  When performing the subjective examination, the processing unit 9 controls the visual chart 42, the light source 41, and the VCC lens 44 based on the result of the objective examination. The processing unit 9 displays the optotype selected by the examiner or the processing unit 9 on the optotype chart 42. Thereby, the target is presented to the subject. The subject responds to the target. Upon receiving the response content, the processing unit 9 performs further control and calculation of the subjective test value. For example, in the visual acuity measurement, the processing unit 9 selects and presents the next target based on the response to the Landolt ring or the like, and repeats this to determine the visual acuity value.

(Ref measurement projection system 6 and Reflex measurement light receiving system 7)
The reflex measurement projection system 6 and the reflex measurement light receiving system 7 are used for objective refraction measurement (ref measurement). The reflex measurement projection system 6 projects a ring-shaped light beam (infrared light) for objective refraction examination onto the fundus oculi Ef. The ref measurement light receiving system 7 receives the return light from the eye E of the ring-shaped light flux.

  The reflex measurement light source 61 is movable in the optical axis direction and is disposed at a position optically conjugate with the fundus oculi Ef. The light output from the reflex measurement light source 61 passes through the condenser lens 62, is reflected by the reflecting mirror 63, passes through the conical prism 64A and the relay lens 64B, passes through the ring-shaped light transmitting portion of the ring stop 64C, and is ringed. To form a luminous flux. The ring-shaped light beam formed by the ring stop 64C is reflected by the reflecting surface of the perforated prism 65, passes through the rotary prism 66, and is guided to the quick return mirror 67.

  The rotary prism 66 is used to average the light amount distribution of the ring-shaped light flux with respect to the blood vessel and diseased part of the fundus oculi Ef. The quick return mirror 67 is used for switching between objective refraction measurement and ocular axial length measurement. When the objective refraction measurement is performed, the reflection surface of the quick return mirror 67 is arranged in an optical path (branching optical path) branched from the optical path of the observation system 5 by the dichroic mirror 52. Thereby, both the optical path of the reflex measurement projection system 6 and the optical path of the reflex measurement light receiving system 7 are coupled to the optical path of the observation system 5.

  In objective refraction measurement, the ring-shaped light beam that has passed through the rotary prism 66 is reflected by the quick return mirror 67, is reflected by the dichroic mirror 52, passes through the objective lens 51, and is projected onto the fundus oculi Ef.

  The return light of the ring-shaped light beam projected on the fundus oculi Ef passes through the objective lens 51 and is reflected by the dichroic mirror 52 and the quick return mirror 67. The return light reflected by the quick return mirror 67 passes through the rotary prism 66, passes through the hole of the perforated prism 65, passes through the relay lens 71 and the focusing lens 72, and is imaged by the imaging lens 73. The image is formed on the imaging surface. The output of the image sensor 74 is input to the processing unit 9. The processing unit 9 calculates the spherical power, the astigmatism power, and the astigmatism axis angle of the eye E by performing a known calculation based on the output from the image sensor 74.

  Based on the calculated refraction value, the processing unit 9 moves the reflex measurement light source 61 and the focusing lens 72 in the optical axis direction to positions where the reflex measurement light source 61 and the fundus oculi Ef are conjugate. The processing unit 9 can also move the reflex measurement light source 61, the focusing lens 72, the light source 41, and the target chart 42 integrally.

(Information processing system configuration)
An information processing system of the ophthalmologic apparatus 40 according to the present embodiment will be described. An example of the functional configuration of the information processing system of the ophthalmologic apparatus 40 is shown in FIG. The information processing system includes a control unit 300, an inspection unit 100, a moving mechanism unit 500, a display unit 200, an operation unit 400, a sound generation unit 600, and a fixed index chart display unit 700.
The control unit 300 controls the operation of the inspection unit 100, the movement mechanism unit 500, the display unit 200, the sound generation unit 600, the fixation index chart display unit 700, and the eye opening mechanism 27.

(Inspection unit 100)
The inspection unit 100 can perform a plurality of different types of inspection. In the ophthalmologic apparatus 40 having the configuration shown in FIGS. 1 and 2, a plurality of examinations including objective refraction measurement, subjective refraction measurement (distance examination, near-distance examination, contrast examination, glare examination, etc.), and corneal shape measurement Can be executed.

  The inspection unit 100 projects ring-shaped measurement pattern light (pattern light) on the fundus oculi Ef of the eye E, and optically acquires a measurement pattern image (pattern image) based on the return light from the fundus oculi Ef.

  The inspection unit 100 includes alignment systems 1 and 2, a kerato measurement system 3, an index projection system 4, an observation system 5, a reflex measurement projection system 6, and a reflex measurement light receiving system 7. The reflex measurement projection system 6 projects ring-shaped measurement pattern light onto the fundus oculi Ef of the eye E, and the reflex measurement light receiving system 7 returns the measurement pattern light projected by the reflex measurement projection system 6 from the fundus oculi Ef. Detect light.

  The moving mechanism unit 500 moves the inspection unit 100 relative to the eye E. The moving mechanism unit 500 is a mechanism that drives an optical member that constitutes the inspection unit 100. The movement mechanism unit 500 forms an actuator that generates a driving force that can be controlled by the control unit 300, and the inspection unit 100 and the inspection unit 100. And a member that transmits to the optical member. Moreover, the test | inspection part 100 may include the function which calculates | requires a test result by analyzing the data acquired by the optical system which has. In that case, the inspection unit 100 includes at least a part of the processing unit 9 shown in FIG.

(Display unit 200, operation unit 400)
The display unit 200 displays various information based on control by the control unit 300. The display unit 200 includes the display unit 10 shown in FIG.

The operation unit 400 is used for operating the ophthalmologic apparatus 40. The operation unit 400 includes various hardware keys (control levers, buttons, switches, etc.) provided in the ophthalmologic apparatus 40.
The operation unit 400 includes various software keys (buttons, icons, menus, etc.) displayed on the touch panel display screen 10a. Note that at least a part of the display unit 200 and the operation unit 400 may be integrally formed, and a typical example is a touch panel display screen 10a. The ophthalmologic apparatus 40 according to the present embodiment shown in FIG. 3 shows this example.

(Control unit 300)
The information processing system is configured around the control unit 300. The control unit 300 executes various types of information processing such as arithmetic processing and control processing. The control unit 300 includes a part of the processing unit 9 shown in FIG. 2. The control unit 300 includes an optical system control unit 301, a display control unit 302, an alignment control unit 303, and a storage unit 304. ing.

(Optical system controller 301)
The optical system control unit 301 controls the inspection unit 100. Specifically, the optical system control unit 301 includes the light sources 41 and 61, the alignment light sources 11 and 21, the kerating light source 32 of the kerato plate 31, the reflex measurement projection system 6, the focusing lenses 43 and 72, the chart plate 42, and the VCC. The operation of the lens 44 and the like is controlled.

  The optical system control unit 301 can adjust the focus state of the measurement pattern image based on the return light from the fundus oculi Ef. In the case of automatic adjustment, the optical system control unit 301 controls the moving mechanism unit 500 according to a known focus adjustment method such as a contrast difference detection method or a phase difference detection method, for example. The position of the lens 72 in the optical axis direction is controlled.

  In the case of manual adjustment, for example, while displaying manual focus information such as an index, the optical system control unit 301 moves the movement mechanism unit based on the operation contents of the examiner's operation unit 400 referring to the manual focus information. By controlling 500, the positions of the focusing lens 43 and the focusing lens 72 in the optical axis direction are controlled.

  Further, the optical system control unit 301 can control each of the above-described units based on the operation contents of the examiner with respect to the operation unit 400. For example, the optical system control unit 301 can adjust the focus state of the measurement pattern image based on the return light from the fundus oculi Ef based on the operation content of the examiner with respect to the operation unit 400.

(Display control unit 302)
The display control unit 302 displays various information on the display unit 200. In the present embodiment, the display control unit 302 displays an image of the eye to be examined on the display unit 200 (display unit 10) having the touch panel display screen 10a.

Examples of the eye image include a real-time image of the eye to be examined, an image of the eye to be examined that has been acquired in the past, an image of the eye to be registered in advance, and an image (schematic diagram, schema) that schematically represents the eye to be examined.
The real-time image of the eye to be examined may be the anterior segment image E ′ obtained from the detection result of the image sensor 59. The display control unit 302 may further display the alignment mark AL so as to be superimposed on the image of the eye to be examined. The display control unit 302 may further display the index image Br so as to be superimposed on the image of the eye to be examined.

The display control unit 302 can display an operation screen on the display unit 130 having the touch panel display screen 10a. On the operation screen, a measurement pattern image based on the return light from the fundus oculi Ef and an instruction input unit for changing the focus state of the measurement pattern image are displayed.
The measurement pattern image is an image formed on the image sensor 59 by the return light from the fundus oculi Ef of the eye E to which the ring-shaped measurement pattern light is projected. The examiner can perform an instruction operation for moving the focusing lens 43 and the focusing lens 72 in the optical axis direction with respect to the instruction input unit.

The operation screen may further include a transition instruction input unit for shifting to the clouded vision state, a capture instruction input unit for capturing the measurement pattern image displayed on the operation screen, and the like.
The examiner can perform an instruction operation for shifting to the cloud fog view state with respect to the shift instruction input unit. Further, the examiner can perform an instruction operation for capturing an image of the eye to be examined and a measurement pattern image as a still image with respect to the capture instruction input unit.

  Further, the display control unit 302 may display the operation screen superimposed on the image of the eye E to be examined such as the anterior segment image E ′. Accordingly, the examiner can perform an instruction operation on various instruction input units displayed on the operation screen while confirming the state of the eye to be examined.

(Blink notification means)
In the ophthalmologic apparatus 40 according to the present embodiment, when the control unit 300 determines that the subject does not blink when performing the optometry work, the controller 300 determines that the blink is necessary. In some cases, it is provided with notifying means for notifying the subject that blinking is required according to an instruction from the control unit 300.

  The optical system 100 includes an imaging unit that images the anterior eye portion of the subject. In the present embodiment, the imaging unit corresponds to the imaging element 59 that constitutes the observation system 5. As a result, when the control unit 300 including the processing unit 9 determines that the subject needs to blink based on the anterior segment image E ′ captured by the image sensor 59, the control unit 300 notifies the user. It is comprised so that it may alert | report to a subject to blink through a means.

  As shown in FIG. 3, the ophthalmologic apparatus 40 according to the present embodiment includes a base portion 81, a measurement head 82, a U-shaped frame-shaped face receiving frame 83 provided in front of the measuring head 82, A chin rest 84 that projects from the lower side of the frame 83 and a UI (examiner interface) 85 are provided. The subject sits in front of the ophthalmologic apparatus 40, and the chin is placed on the chin. The tester is placed on the receiving part 84 and applied to a forehead support part 87 provided at the upper end of the face receiving frame part 83 so that the face is fixed to the face receiving frame part 83, and the examiner uses the UI part 85 The device is operated, and inspection, photographing, and measurement are performed while confirming an image acquired from the subject during the inspection.

As shown in FIG. 3, the face receiving frame 83 includes a pair of side frame portions 18 and 18 erected in the width direction of the measuring head 82 and an upper portion provided at the upper end portions of the side frame portions 18 and 18. And a frame portion 19. The lower end portions of the side frame portions 18 and 18 are fixed to a side surface substantially T-shaped base support portion 20.
In the ophthalmologic apparatus 40 according to the present embodiment, the side frames 18 and 18 each have built-in speakers 601 and 601 that are directed inward.
Therefore, when the subject 22 places his / her chin on the chin receiving portion 84 and places the head in the face receiving frame portion 83 with the forehead in contact with the forehead rest 87 during the examination. The speakers 601 and 601 are configured so as to be disposed substantially lateral to both ears of the subject.

  On the premise of such a configuration, the control unit 300 stores in the storage unit 304 when it is determined that the subject needs to blink based on the anterior segment image E ′ captured by the image sensor 59. The necessary notification voice data is identified from the received voice data, and, as shown in FIG. 3, for example, “soon to be measured” (for the subject 22 via the speakers 601 and 601 as the voice generation unit 600. (Shooting starts. Please blink once.) To urge the subject to blink.

Further, the notification means is not limited to the speaker 601 as the sound generation unit 600, and as shown in FIG. 4, a fixation is made of a landscape chart that can be seen when the subject looks into the inspection eye hole 86 of the measurement head unit 82. You may perform the display notified to the mark 15.
FIG. 4 shows the solid index 15 that can be visually recognized when the subject 22 looks into the examination eye hole 42. For example, a notification character 16 such as “measurement (photographing) will start soon. Please blink once” is displayed on the background diagram of the fixed index 15 to prompt the subject 22 to blink. Also good.

  In this case, the control unit 300 identifies the necessary notification character 16 data from the plurality of notification character data stored in the storage unit 304, instructs the fixation index chart display unit 700, and fixes the fixation target. In FIG. 15, characters are displayed within a range that does not conflict with the design of the landscape chart, and the notification characters 16 are displayed on the fixation target 15.

  In this case, the control unit 300 determines whether or not to notify that blinking is necessary, for example, by irradiating light from the kerating light source 32 and cornea of the eye E of the subject 22. It may be configured to determine whether or not there is a need to blink depending on the loss of the ring-shaped light beam projected onto K.

That is, as shown in FIGS. 2 and 5, the light reflected from the keratography light source 32 through the kerat plate 31 to the cornea K of the optometry E is reflected by the imaging device (area sensor) 59. 33 is detected together with the anterior segment image E ′.
When the processing unit 9 constituting the control unit 300 detects that the keratling image 33 is partially missing based on the information of the keratling image 33, the control unit 300 including the processing unit 9 It is determined that the person's 22 heel is lowered or the heel is in a partially closed state, and the blink generation notification by the notification means is performed on the voice generation unit 600 or the individual chart chart display unit 700 as the notification means. Instruct that the subject needs to be blinked by giving an instruction to generate a sound or display a notification character and generating a sound by the speaker 601 or displaying a fixed index character. To do.

  Further, the controller 300 determines the necessity of blinking based on the presence or absence of recognition of the alignment light spot projected on the cornea K of the eye E of the subject 22 by irradiation of light from the alignment light sources 11 and 21. It may be configured.

  That is, as shown in FIGS. 2 and 5, the light reflected from the cornea K of the optometer E from the Z alignment light source 11 and the XY alignment light source 21 is reflected by the image sensor (area sensor) 59. It is detected together with E ′ and recognized as a bright spot image Br shown on the display screen 10a.

  When the alignment light spot cannot be recognized as the bright spot image Br by the image pickup device 59, the control unit 300 including the processing unit 9 is in a state where the eyelid of the subject 22 is lowered or the eyelid is half closed as described above. And instructing the voice generation unit 600 or the individual chart display unit 700 as the notification unit to generate a voice or display a notification character. To generate a voice or display a notification character 16 on the fixed index 15 to notify the subject that blinking is necessary.

Furthermore, the control unit 300 may be configured to determine the necessity of blinking based on the presence or absence of an iris image defect based on the acquired eye information.
That is, as shown in FIG. 5, light from the anterior segment of the eye E to be examined is detected by the image sensor (area sensor) 59 via the objective lens 51 constituting the observation system 5, and the processing unit 9 is Recognized as a partial image E ′.

  In this case, when the control unit 300 including the processing unit 9 recognizes that the iris image 17 is partially missing in the anterior eye image E ′, the wrinkle is lowered or Is determined to be in a semi-closed state, and a voice is generated or a notification character 16 is displayed on the voice generation unit 600 or the individual chart display unit 700 serving as the notification unit when the notification of the blinking by the notification unit is detected. To notify the subject 22 that the subject 22 needs to be blinked by generating a voice from the speaker 601 or displaying the notification character 16 on the fixed index 15.

Furthermore, the controller 300 may be configured to determine the necessity of blinking according to the degree of bleeding due to tears on the anterior eye surface.
That is, as described above, as shown in FIG. 5, the light from the anterior segment of the eye E is detected by the image sensor (area sensor) 59 via the objective lens 51 constituting the observation system 5, and the processing unit 9 is recognized as an anterior ocular segment image E ′, but the processing unit 9 may recognize that the anterior ocular segment image E ′ is blurred due to outflow of tears in the anterior ocular segment image E ′.

  In such a case, when the control unit 300 including the processing unit 9 determines that the degree of bleeding is large, the state in which the eyelid of the subject 22 is lowered or the eyelid is half closed as described above. And instructing the voice generation unit 600 or the individual chart display unit 700 as the notification unit to generate a voice or display a notification character. A sound is generated by the speaker 601 or the notification character 16 is displayed on the fixed index 15 to notify the subject that blinking is necessary.

Further, in the ophthalmologic apparatus 40 according to the present embodiment, when the optometry work is finished, the control unit 300 is configured to notify the subject 22 that the optometry work is finished by the notifying means. ing.
That is, when the inspection unit 100 completes the inspection, measurement, and imaging of the eye E and the acquisition of the inspection information is completed, the control unit 300 displays the end of the inspection on the voice or the fixation target 15 by the speaker 601. The subject is notified through the displayed notification characters.

  That is, in the present embodiment, when the measurement and photographing work is completed, the control unit 300 determines that and selects the corresponding audio information from the audio information stored in the storage unit 304. Then, the voice information specified for the voice generation unit 600, for example, the voice “The examination is finished” is passed through the speakers 601 and 601 built in the side frame parts 18 and 18 of the face receiving frame part 83. To the subject.

  Alternatively, the control unit 300 identifies necessary notification character 16 data from the notification character 16 data stored in the storage unit 304, instructs the fixation index chart display unit 700, and displays the landscape chart on the fixation target 15. In the range that does not conflict with the design of, display with a notification character to the effect that "examination is complete".

(Opening mechanism)
Further, in the ophthalmologic apparatus 40 according to the present embodiment, as shown in FIGS. 6 and 7, the subject 22 holds the chin on the chin receiving portion 84 disposed in front of the measurement head portion 82. There is provided a chin rest detecting means 26 comprising a pressure sensor for detecting the placement. In addition, as shown in FIGS. 6 and 7, the face receiving frame unit 83 does not blink the subject 22 even when notified by the notification unit based on an instruction from the control unit 300. An opening mechanism 27 for opening the eyelid of the subject 22 is provided.

As shown in FIGS. 6 and 7, the opening mechanism 27 is provided at a substantially central portion of the outer surface portion of the upper frame portion 19 constituting the face receiving frame portion 83. The opening mechanism 27 is an arm portion 29 that is engaged with the eyelid of the subject 22 and a drive that can operate the arm portion 29 in the Z-axis direction (the device front-rear direction) and the Y-axis direction (the device vertical direction) of the ophthalmologic apparatus 40. Part 34.
The drive unit 34 includes an appropriate electric actuator, and is configured to move the arm unit 29 back and forth and up and down. Further, the arm portion 29 is formed in an inverted L shape, and a locking portion 35 is provided at the tip portion. When necessary, the locking portion 35 is locked to the flange 28 to forcibly lift the flange 28 upward. It is configured to be able to.

(flowchart)
Next, a procedure for performing an optometry work using the ophthalmologic apparatus 40 according to the present embodiment will be described.
As shown in FIGS. 6 and 7, the subject 22 sits in front of the ophthalmologic apparatus 40 and places his / her head on the chin rest 84 and presses the forehead against the forehead support 87. Wait at.

When the subject 22 sits in front of the ophthalmologic apparatus 40 and places his / her chin on the chin rest 84, the chin rest detecting means 26 detects the weight of the head of the subject 22 and outputs a predetermined detection signal. Send to control unit 300.
When the control unit 300 receives a detection signal indicating that the chin rest detection means 26 has detected that the subject 22 has placed the chin on the chin rest 84, the main power is supplied to the ophthalmologic apparatus 40 to ophthalmology. The device 40 is activated (S11).
Next, the control unit 300 transmits a control signal to the inspection unit 100, activates the moving mechanism unit 500, and automatically starts alignment (auto-alignment) (S1).

  In the ophthalmologic apparatus 40 according to the present embodiment, when the alignment is completed, the control unit 300 activates various optical systems and captures the anterior ocular segment image captured by the image sensor 59 constituting the observation system 5. From the information, the control unit 300 including the processing unit 9 confirms whether or not the subject 22 has blinked (S2).

  When the control unit 300 detects blinking by the subject 22, the ophthalmologic apparatus 40 starts measurement and imaging work (S3). When the control unit 300 does not detect the blink caused by the subject 22, the control unit 300 performs “determination of necessity of blink guidance” (S5).

  As described above, the “blink guidance necessity determination” is performed as follows. The ring-shaped light beam projected onto the cornea K of the eye E of the subject by irradiation with the light from the kerato ring light source 32 is converted into the kerato ring image 33 as the anterior eye portion. The cornea K of the optometry E of the subject is determined by determining whether it is necessary to perform blinking based on the loss of the kerato ring image 33 detected with the image E ′ or by irradiating light from the alignment light sources 11, 21. The alignment light spot projected onto the image is detected together with the anterior segment image E ′ as a bright spot image Br, and the necessity of blinking is determined based on whether or not the bright spot image Br is recognized, or based on the eye information to be examined The necessity of blinking is determined based on whether or not the iris image 17 is missing.

Furthermore, the control unit 300 may determine the necessity of blinking according to the degree of bleeding due to tears on the anterior eye surface. Further, the above four determination criteria may be appropriately combined and determined comprehensively.
When the control unit 300 makes a determination based on the above determination criterion and determines that “blink notification is not necessary”, the control unit 300 determines that the examination, measurement, and imaging work of the optometry E can be performed, and performs the inspection, measurement, and imaging ( S3).

  On the other hand, when it is determined that blink notification and guidance are necessary, the blink generation notification is generated by the voice generation unit 600 through the speakers 601 and 601 incorporated in the side frame units 18 and 18 of the face receiving frame unit 83. The notification character 16 is notified by the fixed index chart display unit 700 through the fixed index 15 (S6).

  Thereafter, when the control unit 300 detects blinking by the subject 22, the eye E is measured and photographed (S3). On the other hand, when the control unit 300 does not detect the blink caused by the subject 22, the control unit 300 operates the opening mechanism 27 to forcibly open the eyelid 28 of the subject 22 (S8).

That is, as shown in FIG. 6, when the eye opening mechanism 27 is operated, the drive unit 34 first moves the arm unit 29 in the direction of the subject 22 in the Z-axis direction (the apparatus front-rear direction). The locking portion 35 is locked to the heel 28 of the subject 22 by approaching the heel 28 of the person 22. Thereafter, the drive unit 34 moves the arm unit 29 upward in the Y-axis direction (the vertical direction of the apparatus) to pull up the collar 28.
As a result, the eyelid 28 of the subject 22 is forcibly opened, and the precondition for performing the measurement and photographing work is ensured. Thereafter, after confirming the completion of the operation of the opening mechanism 27, the control unit 300 performs measurement and photographing work by the inspection unit 100 (S3).

  Further, in the present embodiment, when the measurement and shooting operations are completed, the control unit 300 determines that and selects the corresponding audio information from the audio information stored in the storage unit 304. Then, the voice information specified for the voice generation unit 600, for example, the voice “The examination is finished” is passed through the speakers 601 and 601 built in the side frame parts 18 and 18 of the face receiving frame part 83. To the subject (S4).

  Alternatively, the control unit 300 identifies necessary notification character 16 data from the notification character 16 data stored in the storage unit 304, instructs the fixation index chart display unit 700, and displays the landscape chart on the fixation target 15. In a range that does not conflict with the symbol, the display is performed with the characters “inspection is completed”, and the notification characters 16 are displayed on the fixation target 15. By this notification, the subject can recognize the end of the examination, measurement, and photographing work.

  Therefore, in the ophthalmologic apparatus 40 according to the present embodiment, the chin rest detection means 26 is provided, and the control is performed when it is confirmed that the subject 22 places the chin on the chin rest portion 84. The unit 300 activates the ophthalmologic apparatus 40 to automatically perform alignment. If no blink is detected, the unit 300 informs that blink is performed. If no blink is detected, the eye opening mechanism 27 is detected. Since the inspection, measurement, and imaging operations are started after the lid 28 is forcibly opened by, even if the examiner is absent at the place where the ophthalmic apparatus 40 is installed, It is possible to perform the optometry work more reliably without requiring work.

  As a result, the optometry work using the ophthalmologic apparatus can be performed completely automatically from the start to the end, eliminating the need for an examiner for the optometry work and greatly reducing the work required for the examiner's optometry. At the same time, it becomes possible to perform optometry, measurement, and photographing operations more reliably.

  Since the present invention relates to an ophthalmologic apparatus, it has wide industrial applicability.

DESCRIPTION OF SYMBOLS 1 Alignment system 2 XY alignment system 3 Kerat measurement system 4 Fixed index projection system 5 Observation system 6 Ref measurement projection system 7 Ref measurement light receiving system 9 Processing part 10 Display part 11 Z alignment light source 12 Imaging lens 13 Line sensor 15 Fixed index 16 Notification character 17 Iris image 18 Side frame portion 19 Upper frame portion 20 Base support portion 21 XY alignment light source 22 Subject 23 Optometry start switch portion 24 Electric cable 25 Switch body 26 Jaw mounting detection means 27 Opening mechanism 28 瞼 29 Arm Unit 31 kerato plate 32 kerato ring 33 kerato ring image 34 drive unit 35 locking unit 40 ophthalmic apparatus 41 light source 42 index chart 43 focusing lens 44 VCC lens 45 reflection mirror 52 dichroic mirror 53 dichroic mirror 54 reflection mirror 55 half mirror 56 relay Lens 57 Relay lens 58 Imaging lens 59 Image sensor (area sensor)
61 Ref measurement light source 62 Condenser lens 63 Reflection mirror 64A Conical prism
64B Relay lens 65 Perforated prism 66 Rotary prism 67 Quick return mirror 71 Relay lens 72 Focusing lens 73 Imaging lens 74 Imaging element 81 Base part 82 Measuring head part 83 Face receiving frame part 84 Jaw receiving part 85 UI part 86 Examination eye Hole 87 Forehead rest part 100 Inspection part 200 Display part 300 Control part 301 Optical control part 302 Display control part 303 Alignment control part 304 Storage part 400 Operation part 401 Optometry start means 500 Moving mechanism part 600 Sound generation part 601 Speaker 700 Fixed index chart Display section
E Eye to be examined E 'Eye image to be examined Br Bright spot image AL Alignment mark

Claims (12)

  An inspection unit for objective examination and / or subjective examination of an eye to be examined, an alignment unit for aligning the examination unit with respect to the eye to be examined, a display unit for displaying examination information, the examination unit, and the alignment A control unit that controls the operation of the display unit and the display unit and acquires eye information on the basis of the detection result obtained by the examination unit, when the control unit performs an optometry work, When it is determined that the subject is not blinking, and when it is determined that blinking is necessary, it is provided with a notifying means for notifying the subject based on an instruction from the control unit. Ophthalmic equipment.   The inspection unit includes an imaging unit that images the anterior eye portion of the subject, and the control unit determines that the subject needs to blink based on the anterior eye image captured by the imaging unit. 2. The ophthalmologic apparatus according to claim 1, wherein in such a case, the subject is notified via the notification means.   3. The control unit according to claim 1, wherein the control unit determines whether it is necessary to perform blinking according to a loss of a ring-shaped light beam projected on a cornea of an eye to be examined by irradiation with light from a kerato ring light source. Ophthalmic equipment.   3. The control unit according to claim 1, wherein the controller determines the necessity of blinking based on whether or not an alignment light spot projected on the cornea of the eye to be examined is irradiated by light from an alignment light source. Ophthalmic equipment.   3. The ophthalmologic apparatus according to claim 1, wherein the control unit determines the necessity of performing blinking based on whether or not the acquired iris image of the subject's eye is missing. 3. The ophthalmologic apparatus according to claim 1, wherein the control unit determines the necessity of performing blinking according to a degree of bleeding due to tears in an anterior ocular segment image.   The ophthalmologic apparatus according to any one of claims 1 to 6, wherein the notification means is a speaker mounted on a face receiving frame portion provided on the subject side of the ophthalmologic apparatus main body.   The ophthalmologic apparatus according to claim 1, wherein the notification unit is a fixation target presented to the subject by the optical system unit.   9. The ophthalmologic apparatus according to claim 1, wherein when the inspection operation is completed, the control unit notifies the subject that the optometry operation is ended by the notification unit. .   2. The ophthalmologic apparatus according to claim 1, wherein the detecting means is a pressure sensor.   Based on an instruction from the control unit, it is provided with an opening mechanism for opening the subject's eyelid when the subject is not blinked even when the notification is given. The ophthalmic apparatus according to claim 1. 12. The ophthalmologic according to claim 11, wherein the eye opening mechanism includes an arm portion that is locked to a subject's eyelid and a drive portion that can pull up the arm portion in the Y-axis direction of the ophthalmologic apparatus. apparatus.