JP2019042172A - Ophthalmologic apparatus and cataract evaluation program - Google Patents

Abstract

To provide an ophthalmologic apparatus and a cataract evaluation program capable of appropriately evaluating cataract.SOLUTION: Provided is an ophthalmologic apparatus for examining a subject eye, comprising: imaging means for capturing an image of the anterior eye part including the crystalline lens of a subject; and analysis means which divides the crystalline lens in the anterior eye part image into a plurality of sections to perform image analysis. Also provided is a cataract evaluation program executed on the ophthalmologic apparatus for examining a subject eye to cause the ophthalmologic apparatus to perform the following steps: an imaging step executed by a processor of the ophthalmologic apparatus to capture an image of the anterior eye part including the crystalline lens of the subject eye; and an analysis step which divides the crystalline lens in the anterior eye part image into a plurality of sections to perform image analysis.SELECTED DRAWING: Figure 6

Description

  The present disclosure relates to an ophthalmologic apparatus that inspects an eye to be examined, and a cataract evaluation program.

  Conventionally, in order to evaluate the degree of progression of cataract, visual confirmation with a slit lamp microscope (slit lamp) and a transillumination image is performed. Cataracts are classified into cortical cataract, nuclear cataract and posterior subcapsular cataract according to the site of onset, and their degree of progression is according to LOCS II classification, LOCS III classification, Emery-Little classification, Wisconsin classification, Wilmer classification, Oxford classification etc. It is evaluated.

JP, 2013-94410, A

  However, since conventional cataract evaluation is performed by visual inspection using a slit lamp microscope or the like, evaluations vary among doctors.

  This indication makes it a technical subject to provide the ophthalmologic apparatus which can perform evaluation of a cataract appropriately, and a cataract evaluation program in view of the conventional problem.

  In order to solve the above-mentioned subject, this indication is characterized by having the following composition.

(1) An ophthalmologic apparatus for examining an eye to be examined, the photographing means for photographing an anterior segment image including the crystalline lens of the subject eye, and the crystalline lens shown in the anterior segment image divided into a plurality of sections And analysis means for image analysis.
(2) A cataract evaluation program executed in an ophthalmologic apparatus for examining an eye to be examined, which is executed by a processor of the ophthalmologic apparatus to capture an anterior segment image including a lens of the eye to be examined And an analysis step of dividing and analyzing the lens in the anterior segment image into a plurality of sections, and causing the ophthalmologic apparatus to execute the analysis step.

It is a schematic block diagram explaining the structure of the ophthalmologic imaging device which concerns on a present Example. It is a flowchart which shows control operation of the ophthalmologic imaging device of a present Example. It is a figure which shows the anterior ocular segment observation screen on which the imaged anterior ocular segment image was displayed. It is a figure which shows an example of an anterior segment cross-sectional image. It is a figure which shows an example of a through-beam image. It is a figure which shows the En face image for every division.

Embodiment
Hereinafter, embodiments according to the present disclosure will be described. The ophthalmologic apparatus (for example, the ophthalmologic imaging apparatus 200) of this embodiment is an ophthalmologic apparatus which inspects an eye to be examined. The ophthalmologic apparatus mainly includes, for example, an imaging unit (for example, the OCT device 5) and an analysis unit (for example, the control unit 80). The imaging unit captures, for example, an anterior segment image including the crystalline lens of the subject's eye. The anterior segment image is, for example, an anterior segment tomographic image. The anterior segment image may be two-dimensional data or three-dimensional data. The analysis unit divides the lens appearing in the anterior segment image into a plurality of sections and analyzes the image. The ophthalmologic apparatus of this embodiment can perform cataract evaluation for each section in the depth direction (eyeball optical axis direction) of the lens by providing such a configuration.

  For example, the analysis unit may divide the lens into any of compartments such as a capsule, a cortex, and a nucleus. Also, the analysis unit may divide the lens into any of compartments such as anterior capsule, posterior capsule, anterior cortex, posterior cortex, nucleus and the like. For example, the analysis unit may detect the border of the capsule, the cortex, or the nucleus, and divide the lens into a plurality of sections based on the detected border. In this case, the analysis unit may detect the boundary by image processing such as edge detection of a tomographic image, for example. This allows the lens to be divided into appropriate sections for each eye to be examined.

  The analysis unit may divide the crystal into a plurality of sections according to a preset pattern. For example, the analysis unit may divide each section in accordance with a pattern of distance from the front surface of the lens, or may divide each section in accordance with a pattern of a predetermined ratio to the thickness of the lens. By this, even if division of a section by image processing of a tomographic image is difficult, the section of the lens can be stably divided.

  The analysis unit may perform image analysis of the tomographic image only in one of the plurality of divided sections, or may perform image analysis of the tomographic image in the plurality of sections.

  The analysis unit may perform image analysis of the tomographic image based on the image brightness or the signal intensity. For example, the analysis unit may evaluate cataract based on image brightness or signal strength. This enables quantitative assessment of cataract.

  The analysis unit may perform image analysis on the anterior segment image based on the polarization. For example, the analysis unit may obtain the birefringence distribution based on the polarization change in the anterior segment image captured by the polarization sensitive OCT. This makes it possible to measure, for example, changes in living tissue due to cataract.

  The analysis unit may classify the type of cataract based on the image analysis result of the tomographic image. For example, the analysis unit may classify types such as cortical cataract, nuclear cataract, and posterior subcapsular cataract based on the degree of turbidity of each section.

  The analysis unit may also determine the degree of progression of the cataract based on the result of the image analysis. For example, the analysis unit may determine the progression degree of the cataract based on the image brightness or the signal strength. As a result, the degree of progression of cataract with less variation can be obtained.

  The analysis unit may compare the progress degree quantified by image analysis with the existing classification (LOCS III classification or the like). For example, a display control unit (for example, the control unit 80) may be provided which causes the display unit (for example, the monitor 70) to display the quantified progress degree and the progress degree based on the existing classification. This makes it possible to confirm the correlation between the quantified progress and the existing classification.

  The imaging unit may be any of an optical coherence tomography (OCT device 5), a Shine proof camera, and an ultrasonic tomography (UBM). The OCT may be polarized OCT or normal OCT which is not polarized.

  The analysis unit may create an En face image in the divided section. For example, the analysis unit may create an En face image in at least two sections on the cornea side and the retina side. This facilitates classification or evaluation of cataract in the depth direction.

  The analysis unit may execute the cataract evaluation program stored in the storage unit (for example, the memory 85) or the like. The cataract evaluation program includes, for example, an imaging step and an analysis step. The photographing step is, for example, a step of photographing an anterior segment image including the crystalline lens of the subject's eye. The analysis step is, for example, a step of dividing the lens appearing in the anterior segment image into a plurality of sections and analyzing the image.

<Example>
Hereinafter, an ophthalmologic photographing apparatus 200 according to the present disclosure will be described based on the drawings. FIG. 1 is a schematic configuration view showing an optical system of an ophthalmologic photographing apparatus 200 according to the present embodiment. The following optical system is built in a housing (not shown). In addition, the housing is three-dimensionally moved relative to the eye E via the operation member (for example, a joystick) by the drive of a known alignment moving mechanism. In the following description, the optical axis direction of the subject's eye (eye E) is Z direction, the horizontal direction is X direction, and the vertical direction is Y direction. The surface direction of the fundus may be considered as the XY direction.

  In the following description, an ophthalmic imaging apparatus 200 provided with an optical coherence tomography device (OCT device) 5 will be described as an example.

  The OCT device 5 is used as an anterior segment imaging device for capturing a cross-sectional image of the eye to be examined E. The OCT device 5 may be used to measure the axial length of the eye E. The cornea shape measuring device 300 is used to measure the cornea shape. The OCT device 5 will be described by exemplifying an optical coherence tomography device for capturing an anterior segment tomographic image (cross-sectional image).

  The OCT device 5 includes an interference optical system (OCT optical system) 100. The OCT optical system 100 irradiates the eye E with measurement light. The OCT optical system 100 detects a state of interference between the measurement light reflected from the anterior segment (for example, a cornea, a lens, etc.) and the reference light by a light receiving element (detector 120). The OCT optical system 100 includes an irradiation position change unit (for example, an optical scanner 108) that changes the irradiation position of the measurement light in the anterior segment to change the imaging position on the anterior segment. The control unit 80 controls the operation of the irradiation position changing unit based on the set imaging position information, and acquires a tomographic image based on the light reception signal from the detector 120.

  The OCT optical system 100 has an apparatus configuration of so-called ophthalmic optical coherence tomography (OCT). The OCT optical system 100 splits the light emitted from the measurement light source 102 into a measurement light (sample light) and a reference light by a coupler (light splitter) 104. Then, the OCT optical system 100 guides the measurement light to the anterior segment by the measurement optical system 106, and guides the reference light to the reference optical system 110. After that, the detector (light receiving element) 120 receives interference light by combining the measurement light reflected by the anterior segment and the reference light.

  The light emitted from the light source 102 is divided by the coupler 104 into a measurement light beam and a reference light beam. Then, the measurement light flux is emitted into the air after passing through the optical fiber. The luminous flux is collected on the anterior segment via the optical scanner 108 and other optical members of the measurement optical system 106. Then, the light reflected by the anterior segment is returned to the optical fiber through the same light path.

  The optical scanner 108 scans the measurement light in the X and Y directions (transverse direction) on the eye E. The light scanner 108 is, for example, two galvanometer mirrors, and the reflection angle thereof is arbitrarily adjusted by the drive mechanism 109.

  Thereby, the light flux emitted from the light source 102 is changed in its reflection (traveling) direction, and is scanned on the eye E in any direction. Thereby, the imaging position on the anterior segment is changed. The light scanner 108 may be configured to deflect light. For example, in addition to a reflection mirror (galvano mirror, polygon mirror, resonant scanner), an acousto-optic element (AOM) or the like that changes the traveling (deflection) direction of light is used.

  The reference optical system 110 generates reference light that is combined with the reflected light obtained by the reflection of the measurement light at the eye E. The reference optical system 110 may be a Michelson type or a Mach-Zehnder type. The reference optical system 110 is formed by, for example, a reflective optical system (for example, a reference mirror), and the light from the coupler 104 is returned to the coupler 104 again by being reflected by the reflective optical system and guided to the detector 120. As another example, the reference optical system 110 is formed by transmission optical system (for example, an optical fiber) and is guided to the detector 120 by transmitting the light from the coupler 104 without returning it.

  The reference optical system 110 is configured to change the optical path length difference between the measurement light and the reference light by moving the optical member in the reference light path. For example, the reference mirror is moved in the optical axis direction. A configuration for changing the optical path length difference may be disposed in the measurement optical path of the measurement optical system 106.

  The detector 120 detects an interference state between the measurement light and the reference light. In the case of Fourier domain OCT, the spectral intensity of the interference light is detected by the detector 120, and a depth profile (A scan signal) in a predetermined range is acquired by Fourier transformation on the spectral intensity data. Here, the control unit 80 can acquire a tomogram by scanning the measurement light in the predetermined transverse direction on the anterior segment by the light scanner 108. That is, an anterior segment tomogram of the eye to be examined is taken. For example, by scanning in the X direction or Y direction, it is possible to acquire a tomographic image (an anterior segment tomographic image) in the XZ plane or the YZ plane of the eye to be examined (in this embodiment, measurement in this manner) The light is scanned one-dimensionally with respect to the anterior segment to obtain a tomogram as B scan). The acquired anterior segment tomographic image is stored in the memory 85 connected to the control unit 80. Furthermore, it is also possible to obtain a three-dimensional image of the anterior segment of the subject's eye by scanning the measurement light two-dimensionally in the XY directions.

  For example, Fourier-domain OCT includes Spectral-domain OCT (SD-OCT) and Swept-source OCT (SS-OCT). Moreover, Time-domain OCT (TD-OCT) may be used.

  In the case of SD-OCT, a low coherent light source (broadband light source) is used as the light source 102, and the detector 120 is provided with a spectroscopic optical system (spectrometer) that disperses interference light into each frequency component . The spectrometer comprises, for example, a diffraction grating and a line sensor.

  In the case of SS-OCT, a wavelength scanning light source (wavelength variable light source) that changes the emission wavelength at high speed temporally is used as the light source 102, and a single light receiving element is provided as the detector 120, for example. The light source 102 includes, for example, a light source, a fiber ring resonator, and a wavelength selection filter. Then, as the wavelength selection filter, for example, a combination of a diffraction grating and a polygon mirror, and one using a Fabry-Perot etalon can be mentioned.

  The ophthalmologic imaging apparatus 200 may also include a kerat projection optical system 50, an alignment projection optical system 40, an anterior eye front imaging optical system 30, and the like.

  The kerat projection optical system 50 has a ring-shaped light source 51 disposed around the measurement optical axis L1 and projects a ring index on the cornea to be examined to measure the corneal shape (curvature, astigmatism axis angle, etc.) Used for For the light source 51, for example, an LED that emits infrared light or visible light is used. In the projection optical system 50, at least three or more point light sources may be disposed on the same circumference around the optical axis L1, and may be an intermittent ring light source. Furthermore, it may be a placido index projection optical system that projects a plurality of ring indices.

  The alignment projection optical system 40 is disposed inside the light source 51, has a projection light source 41 (for example, λ = 970 nm) that emits infrared light, and is used to project an alignment index onto the cornea Ec to be examined. Then, the alignment index projected onto the cornea Ec is used for alignment (for example, automatic alignment, alignment detection, manual alignment, etc.) with respect to the eye to be examined. In the present embodiment, the projection optical system 50 is an optical system that projects a ring index on the subject's eye cornea Ec, and the ring index is also used as the Mayer ring. Further, the light source 41 of the projection optical system 40 doubles as an anterior segment illumination that illuminates the anterior segment with an infrared ray from an oblique direction. In the projection optical system 40, an optical system for projecting parallel light onto the cornea Ec may be further provided, and the front and back alignment may be performed in combination with finite light by the projection optical system 40.

  The front imaging optical system 30 is used to capture (acquire) a front image of the anterior segment. The front imaging optical system 30 includes a dichroic mirror 33, an objective lens 47, a dichroic mirror 62, a filter 34, an imaging lens 37, and a two-dimensional imaging device 35, and is used to capture an anterior image of an anterior segment of an eye to be examined. . The two-dimensional imaging device 35 is disposed at a position substantially conjugate with the anterior eye of the subject's eye.

  Reflected light in the anterior segment by the projection optical system 40 and the projection optical system 50 described above is imaged on the two-dimensional imaging device 35 through the dichroic mirror 33, the objective lens 47, the dichroic mirror 62, the filter 34, and the imaging lens 37. Ru.

  The light source 1 is a fixation lamp. Further, for example, a part of the anterior segment reflected light acquired by the reflection at the anterior segment of the light emitted from the light source 1 is reflected by the dichroic mirror 33 and is imaged by the front imaging optical system 30.

  Next, the control system will be described. The control unit 80 controls the entire apparatus and calculates measurement results. The control unit 80 is connected to each member of the OCT device 5, each member of the cornea shape measuring device 300, the monitor 70, the operation unit 84, the memory 85, and the like.

  In addition, for the operation unit 84, a general-purpose interface such as a mouse may be used as the operation input unit, or in addition, a touch panel may be used.

  The memory 85 stores, in addition to various control programs, an analysis program for the controller 80 to analyze the anterior segment image.

<Evaluation of cataract>
A control operation in the case of evaluating a cataract in an apparatus having the above configuration will be described based on the flowchart of FIG.

(S1: Alignment)
First, the examiner moves the device up, down, left, right and back and forth using the operation means such as a joystick (not shown) while looking at the alignment state of the eye to be examined displayed on the monitor 70. Put in a predetermined positional relationship. At this time, the examiner causes the subject to fixate the fixation target.

  At the time of alignment, the light source 41 and the light source 51 are turned on. For example, as shown in FIG. 3, the examiner aligns the reticle LC electronically displayed on the monitor 70 with the ring indicators Q1 and Q2 by the light source 41 so as to align the top, bottom, left, and right. As a result, alignment is performed in the X and Y directions so that the optical axis L1 of the present apparatus passes through the apex of the cornea of the subject's eye. Also, the examiner performs front-to-back alignment so that the ring index Q1 is in focus.

(S2: Tomographic imaging)
When the alignment is completed, the control unit 80 captures a cross-sectional image 500 of the eye to be examined by the OCT optical system 100 based on a preset scanning pattern (see FIG. 4). For example, the control unit 80 controls the scanner 108 to scan the measurement light from the light source 102 on the anterior segment. The acquired cross-sectional image 500 is stored in the memory 85 or the like.

(S3: crystalline lens segmentation)
Next, the control unit 80 divides (segments) the lens into a plurality of sections in the cross-sectional image 500 captured using the OCT device 5. For example, the control unit 80 detects the boundary of each section (for example, the anterior capsule B1, the anterior cortex B2, the nucleus B3, the posterior cortex B4, the posterior capsule B5, and the like) by image processing such as edge detection of the tomographic image 500. Then, the control unit 80 divides the lens into a plurality of sections based on the detected boundary.

If the boundaries of the sections can not be detected, the control unit 80 may divide the sections according to a predetermined pattern. For example, the control unit 80 may divide each section according to the distance from the front surface of the lens set in advance. For example, the anterior capsule from the lens front to n ₁ pixels, the anterior cortex from n ₁ to n ₂ pixels, the nucleus from n ₂ to n ₃ pixels, the posterior cortex from n ₃ to n ₄ pixels, n ₄ The lens may be divided for each predetermined pixel (or millimeter) such as from the pixel to the back surface of the lens, and so on.

In addition, the control unit 80 may divide the crystalline lens based on a predetermined ratio. For example, the control unit 80 may detect the front surface of the lens and the back surface of the lens from the tomographic image, and may divide the lens at a predetermined ratio to the calculated lens thickness. For example, from the front of the lens, m ₁ % of lens thickness to anterior capsule, m ₂ % to anterior cortex, m ₃ % to nucleus, m ₄ % to posterior cortex, m ₅ % to posterior capsule and so on The controller 80 may divide the sections of the lens based on the ratio of each section to the predetermined lens thickness. Of course, it may be further divided into smaller sections.

(S4: Image analysis)
Next, the control unit 80 performs image analysis for each of the sections divided as described above. The analysis method is, for example, analysis based on the luminance value of the image, analysis based on the signal intensity, or the like. For example, the control unit 80 evaluates cataract based on the luminance value of the tomographic image 500. For example, when the degree of progression of cataract is high, the measurement light is reflected due to turbidity, so the luminance value of the image is large. Therefore, for example, the control unit 80 calculates an integrated value of luminance in each section, and determines the progress degree of cataract based on the integrated value. Thereby, the control unit 80 can quantify the evaluation of cataract.

  Also, the control unit 80 may classify the type of cataract based on the site of onset of the cataract. For example, the controller 80 classifies as cortical cataract if the progression of cataract in the cortical compartment is large, and classifies as nuclear cataract if the progression of cataract in the nucleus compartment is large, and cataract in the posterior capsule compartment If the degree of progression is large, it may be classified as posterior subcapsular cataract.

  The control unit 80 may generate an Enface image based on the three-dimensional tomographic image data acquired by the OCT device 5. In addition, the control unit 80 may cause the monitor 70 to display the generated Enface image. The En face image is an image when viewed from the optical axis direction (for example, the z direction) of the measurement light. Note that En face is, for example, a plane horizontal to the fundus plane, or a two-dimensional fundus plane or the like.

  Examples of a method of generating an Enface image from three-dimensional tomographic image data include a method of extracting tomographic image data with respect to at least a partial region in the depth direction (optical axis direction). For example, the control unit 80 may generate an En face image by integrating (or averaging) luminance values of tomographic image data extracted for a certain section in the depth direction.

  For example, the control unit 80 may generate an En face image for each of the divided sections, and may evaluate the cataract based on the En face image for each section. Of course, the control unit 80 does not have to create Enface images in all of the divided sections, and may only create Enface images in at least two sections divided on the cornea side and the retina side.

  For example, when a cataract is evaluated by the trans-illumination image 600 as shown in FIG. 5, only the evaluation in the entire lens can be performed. However, as shown in FIG. 6, it is possible to evaluate the turbid region depending on the depth direction (eyeball optical axis direction) by evaluating the En face image 700 created for each section.

  For example, Fig. 6 (a) is an enface image of the anterior lens capsule, Fig. 6 (b) is an enface image of the cortex (front side), Fig. 6 (c) is an enface image of a nucleus, and Fig. 6 (d) is a cortex. FIG. 6 (e) is an En face image of the posterior capsule of the crystalline lens. As shown in the example of FIG. 6, when the degree of turbidity is different for each section, the control unit 80 evaluates the cataract based on the En face image 700 for each section, the type of cataract or the progress degree for each section, etc. Can be determined, and evaluation can be performed in more detail.

  The control unit 80 may compare the degree of progress obtained for each section with the existing classification such as the LOCS III classification. The LOCS III classification is to classify the degree of nucleus, cortex and posterior subcapsular cataract according to the reference color slit lamp photomicrograph and trans-illumination photograph. The color and turbidity of the nucleus consist of 6 levels, and the cortex and the subcapsular area consist of 5 levels of reference photographs.

  For example, the control unit 80 may compare and display on the monitor 70 the progress degree of each section quantified based on the image brightness or the signal height, and the progress degree in the LOCS III classification. By this, the examiner can judge the final progress degree by comprehensively judging both results. Of course, the control unit 80 may determine the final progress degree based on the comparison result of the progress degree. The degree of progress of the LOCS III classification may be acquired based on an input to the operation unit 84 of the examiner, or may be acquired from an external device via a network. Also, for example, the control unit 80 compares the image corresponding to each section of the nucleus, cortex, and posterior capsule with the reference image of the LOCS III classification to determine the most similar image among the reference images of each stage. The degree of progression in the LOCS III classification may be determined by

  The control unit 80 may perform follow-up observation by comparing the past image data of the subject with the current image data. For example, the control unit 80 may compare the degree of progression of cataract obtained by analyzing the past image data with the degree of progression of cataract obtained by analyzing the current image data. It may be displayed on the screen. This may confirm the progress of cataract or predict future symptoms. Further, the control unit 80 may confirm the effect of the cataract treatment drug.

  As described above, the ophthalmologic imaging apparatus 200 of the present embodiment divides the lens into a plurality of sections in the anterior segment image including the lens captured by the OCT device 5, and analyzes the image for each section of the lens. Assessment of cataract. In addition, by automating the classification of cataract and the determination of the degree of progression, which has heretofore relied on visual confirmation, it is possible to reduce the number of medical examinations by the doctor. In addition, quantification of the evaluation of cataract can reduce variation in judgment by visual diagnosis as in the past.

  In the present embodiment, as an anterior segment imaging device for capturing an anterior segment sectional image, an optical coherence tomography device for capturing an anterior segment tomographic image (sectional image) has been exemplified, but the present invention is not limited to this. A projection optical system for projecting light emitted from a light source toward the anterior eye of the subject's eye to form a light cutting surface on the anterior eye, and before being acquired by scattering in the anterior eye of the light cutting surface It is sufficient to have a light receiving optical system having a detector for receiving light including scattered light in the eye, and to form an anterior segment cross-sectional image based on a detection signal from the detector. That is, the present invention can also be applied to an apparatus or the like that projects slit light onto the anterior segment of an optometry eye and obtains an anterior segment cross-sectional image with a Shine Pluck Camera.

  In this case, the three-dimensional shape image of the anterior segment may be acquired by rotating the Shine Pluck Camera or moving it in the horizontal or vertical direction. Note that positional deviation in the direction perpendicular to the imaging surface (slit cross section) is detected, and deviation correction processing is performed based on the detection result.

  Moreover, in the said structure, although the anterior segment cross-sectional image was optically acquired, it is not limited to this. For example, the configuration may be such that an anterior segment cross-sectional image is acquired by detecting reflection information from the anterior segment using an ultrasound probe for B scan.

  The control unit 80 may evaluate a cataract using a machine learning classifier.

DESCRIPTION OF SYMBOLS 5 optical coherence tomography device 30 front eye front surface imaging optical system 40 alignment projection optical system 50 Kerat projection optical system 70 monitor 80 control part 85 memory 84 operation part

Claims (16)

An ophthalmologic apparatus for examining an eye to be examined,
A photographing unit configured to photograph an anterior segment image including the crystalline lens of the subject eye;
An analysis unit that divides the lens in the anterior segment image into a plurality of sections and analyzes the image;
An ophthalmologic apparatus comprising:   The ophthalmologic apparatus according to claim 1, wherein the analysis means detects any boundary of the lens capsule, the lens cortex, and the lens nucleus, and divides the lens into a plurality of sections based on the detected boundary. apparatus.   The ophthalmologic apparatus according to claim 1, wherein the analysis unit divides the lens into a plurality of sections according to a preset pattern.   The ophthalmologic apparatus according to claim 3, wherein the analysis means divides the lens into a plurality of sections according to a predetermined pattern of distances.   The ophthalmologic apparatus according to claim 3, wherein the analyzing means divides the lens into a plurality of sections in a pattern of a ratio to the lens set in advance.   The ophthalmologic apparatus according to any one of claims 1 to 5, wherein the analysis means performs image analysis on the anterior segment image based on image brightness or signal intensity.   The ophthalmologic apparatus according to any one of claims 1 to 5, wherein the analysis means performs image analysis on the anterior segment image based on polarization.   The ophthalmologic apparatus according to any one of claims 1 to 7, wherein the analysis unit classifies the type of cataract based on the result of the image analysis.   The ophthalmologic apparatus according to any one of claims 1 to 8, wherein the analysis unit determines the degree of progression of cataract based on the result of the image analysis.   The ophthalmologic apparatus according to claim 9, wherein the analysis means compares the progress degree with an existing evaluation classification.   10. The ophthalmologic apparatus according to claim 9, further comprising display control means for displaying on the display means the comparison result of the degree of progress and the existing evaluation classification.   The ophthalmologic apparatus according to any one of claims 1 to 11, wherein the analysis unit generates an En face image for each of the sections.   The ophthalmologic apparatus according to claim 12, wherein the analysis means generates the En face image in at least two sections on the cornea side and the retina side.   The ophthalmologic apparatus according to claim 12, wherein the analysis means creates the En face image in any section of the lens capsule, the lens cortex, and the lens nucleus.   The ophthalmologic apparatus according to any one of claims 1 to 14, wherein the imaging means is any one of an optical coherence tomography, a shine proof camera, and an ultrasonic tomography device. It is a cataract evaluation program executed in an ophthalmologic apparatus for examining an eye to be examined, and is executed by a processor of the ophthalmologic apparatus,
A photographing step of photographing an anterior segment image including the crystalline lens of the subject eye;
Analyzing the image by dividing the lens in the anterior segment image into a plurality of sections;
A cataract evaluation program that causes the ophthalmologic apparatus to execute;

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