JP6542028B2 - Ophthalmic microscope system - Google Patents

Description

  The present invention relates to an ophthalmic microscope system.

  In the ophthalmology field, various microscopes such as a slit lamp microscope and a surgical microscope are used. An ophthalmologic microscope is generally a stereomicroscope having a pair of left and right observation light paths. The left and right eyepiece tubes of the ophthalmologic microscope include a parallel vision type and an inward vision type. In the parallel vision type, the optical axes of the left and right eyepieces are arranged in parallel. In the inward-viewing type, the optical axes of the left and right eyepieces are arranged nonparallel so as to narrow toward the front. The user selects and uses a type that is easy for him to view stereoscopically.

JP 2001-311876 A

  An ophthalmologic microscope may be shared by multiple users. In this case, there is a problem that the eyepiece tube is replaced each time the user changes.

  An object of the present invention is to provide an ophthalmologic microscope system in which it is not necessary to replace the eyepiece tube according to the user.

The embodiment is an ophthalmologic microscope system for three-dimensionally observing an image of an eye to be examined, and includes a pair of light receiving optical systems, a display control unit, and a selection presenting unit. The pair of light receiving optical systems guide the light from the subject's eye to the respective imaging devices. The display control unit causes the display unit to display the pair of images acquired by the imaging elements of the pair of light receiving optical systems in a positional relationship corresponding to the predetermined value of the inter-pupil distance. The selection presenting unit presents one of the pair of images to the left eye of the observer, and presents the other of the pair of images to the right eye. The display control unit changes the convergence angle by changing the distance between the pair of images.

  According to the ophthalmic microscope system according to the present invention, it is not necessary to replace the eyepiece tube according to the user.

It is a schematic showing the example of composition of the ophthalmology microscope system concerning an embodiment. It is a schematic showing the example of composition of the ophthalmology microscope system concerning an embodiment. It is a schematic showing the example of composition of the ophthalmology microscope system concerning an embodiment. It is a schematic diagram for explaining an operation example of an ophthalmologic microscope system concerning an embodiment. It is a schematic diagram for explaining an operation example of an ophthalmologic microscope system concerning an embodiment. It is a flowchart for demonstrating the example of the usage form of the ophthalmologic microscope system which concerns on embodiment. It is the schematic for demonstrating the ophthalmologic microscope system which concerns on a modification. It is the schematic for demonstrating the ophthalmologic microscope system which concerns on a modification.

  An ophthalmologic microscope system according to an embodiment will be described in detail with reference to the drawings. The ophthalmic microscope system of the following embodiments includes a slit lamp microscope, but may include other types of ophthalmic microscopes. In the following embodiments, the contents of the documents cited in this specification can be arbitrarily incorporated.

[Constitution]
A configuration example of the ophthalmologic microscope system 1 is shown in FIG. The optical system of the ophthalmologic microscope system 1 includes an observation system 6 and an illumination system 8. Besides these, for example, a background illumination system may be included (not shown).

[Observation system]
The observation system 6 includes a pair of left and right optical systems 6L and 6R. The left and right optical systems 6L and 6R have the same configuration. An examiner (observer) can observe the eye E with two eyes (stereoscopic observation) by the left and right optical systems 6L and 6R. Furthermore, the examiner can three-dimensionally observe a pair of images acquired by the imaging devices 43L and 43R described later. In FIG. 1, only one of the left and right optical systems 6L and 6R of the observation system 6 is shown. The code O1 is the optical axis (observation optical axis) of the observation system 6.

  Each of the left and right optical systems 6L and 6R of the observation system 6 includes an objective lens 31, a variable magnification optical system 32, a stop 33, a beam splitter 34, a relay lens 35, a prism unit 36, and an eyepiece lens 37. The code Ec indicates the cornea of the eye E, the code Ep indicates the iris, and the code Er indicates the fundus. The code Eo indicates the examiner's eye.

  In other embodiments, the eyepiece may not be provided. That is, the ophthalmologic microscope system of the other embodiment may not have a configuration for performing visual observation through the eyepiece. In such an embodiment, the examiner observes the displayed image of the eye to be examined E. In the embodiment in which the eyepiece lens is not provided, the optical system may include at least an objective lens, and may optionally include an imaging lens and a variable magnification lens.

  The variable magnification optical system 32 includes, for example, a plurality of (for example, two) variable magnification lenses 32 a and 32 b relatively movable along the observation light axis O 1. Another configuration example of the variable magnification optical system 32 includes a plurality of variable magnification lens groups having different magnifications, and a mechanism for selectively arranging these variable magnification lens groups in the optical path of the observation system 6. The variable power lens group disposed in the optical path of the observation system 6 functions as the variable power optical system 32. The magnification (field angle) of the macroscopic observation image of the eye E and the photographed image is arbitrarily changed by the variable magnification optical system 32.

  In the other embodiments, the variable magnification optical system 32 may not be provided. In that case, the observation image is enlarged by a so-called digital zoom function. The digital zoom function includes a process of trimming a predetermined area of the acquired image and a process of enlarging the trimmed area. Other embodiments may have both an optical zoom function by the variable magnification optical system 32 and a digital zoom function.

  The beam splitter 34 splits the return light from the subject eye E traveling along the observation light axis O1 into two. The component of the return light transmitted through the beam splitter 34 is guided to the examiner's eye Eo via the relay lens 35, the prism unit 36 and the eyepiece lens 37. The prism unit 36 includes, for example, two optical elements 36a and 36b, and converts an inverted image into an erected image while translating the traveling direction of light upward.

  On the other hand, the component of the return light reflected by the beam splitter 34 is guided to the imaging element 43 via the imaging lens 41 and the mirror 42. The imaging device 43 detects this return light to generate an image signal. As the imaging element 43, for example, a CCD area sensor or a CMOS area sensor is used.

  As described above, the imaging device 43 is provided in both of the left and right optical systems 6L and 6R. The left imaging element 43L provided in the left optical system 6L detects the return light guided by the left optical system 6L and outputs a left image signal 44L. Similarly, the right imaging element 43R provided in the right optical system 6R detects the return light guided by the right optical system 6R and outputs a right image signal 44R.

  The left image signal 44L and the right image signal 44R are input to the control unit 74. The control unit 74 outputs the left display signal 45L based on the left image signal 44L and the right display signal 45R based on the right image signal 44R to the display device 70.

  The display device 70 displays a left display image 71L based on the left display signal 45L and a right display image 71R based on the right display signal 45R (see FIG. 4 and the like).

  It is also possible to apply a configuration in which the imaging device 43 is provided only to one of the left and right optical systems 6L and 6R. In that case, the left display signal 45L and the right display signal 45R are generated from the image signal output from the imaging device 43 provided in the left optical system 6L or the right optical system 6R. This signal generation process includes known image processing techniques for creating a stereoscopic image from a single image.

[Lighting system]
The illumination system 8 illuminates the eye E with illumination light. In particular, the illumination system 8 illuminates the eye E with slit light. The illumination system 8 includes a light source 51, a relay lens 52, an illumination diaphragm 53, a condensing lens 54, a slit forming portion 55, and a condensing lens 56. The code O2 indicates the optical axis (illumination optical axis) of the illumination system 8. The width (slit width) of the slit light is changed by the slit forming portion 55, and the length (slit length) of the slit light is changed by the illumination diaphragm 53.

[Display device]
The display device 70 includes a liquid crystal display 71, a polarization filter 72, and a position input panel 73. The polarizing filter 72 and the position input panel 73 are provided on at least the display surface of the liquid crystal display 71. In FIG. 2, one surface of the polarization filter 72 is disposed on the display surface of the liquid crystal display 71, and the position input panel 73 is disposed on the other surface of the polarization filter 72. One surface may be disposed, and the polarization filter 72 may be disposed on the position input panel 73. In addition, the polarization filter 72 may be disposed on the display surface of the touch panel having the display function and the position input function.

  The polarization filter 72 includes a left polarization filter 72L and a right polarization filter 72R. The transmission axis of the left polarization filter 72L and the transmission axis of the right polarization filter 72R are different. Typically, the transmission axes are orthogonal to one another. In the example shown in FIG. 2, the transmission axis of the left polarization filter 72L is in the vertical direction (longitudinal direction), and the transmission axis of the right polarization filter 72R is in the horizontal direction (horizontal direction).

  In the description of the display device 70 and the information displayed thereon, the left direction (right direction) indicates the left (right) toward the display surface of the display device 70. The vertical direction is typically a vertical direction, but more generally, it may be defined as a direction substantially coincident with the body axial direction (median line direction) of the observer facing the display surface. This definition is also applicable to, for example, the case where a display device 70 capable of arbitrarily changing the posture, such as a tablet, is used.

  Furthermore, in the example shown in FIG. 2, the polarization filter 72 is arranged such that the left polarization filter 72L is disposed in the left half (left area) of the display surface and the right polarization filter 72R is disposed in the right half (right area). The liquid crystal display 71 is disposed. Here, the code C1 indicates the boundary position between the left area and the right area, and the code C2 indicates the boundary position between the left polarization filter 72L and the right polarization filter 72R in the left-right direction. The polarization filter 72 is mounted on the liquid crystal display 71 such that the boundary position C2 coincides with the boundary position C1. Therefore, only the vertical polarization component of the light output from the left region of the liquid crystal display 71 transmits the left polarizing filter 72L, and only the horizontal polarization component of the light output from the right region transmits the right polarizing filter 72R. Do.

[Control system]
The structural example of the control system of the ophthalmologic microscope system 1 is shown in FIG. In FIG. 3, only the components that are of particular interest in this embodiment are described. The control unit 74 controls each unit of the ophthalmic microscope system 1. For example, the control unit 74 causes the liquid crystal display 71 to display various information. The control unit 74 also performs generation processing and processing of information to be displayed on the liquid crystal display 71. Furthermore, the ophthalmologic microscope system 1 includes a storage unit 75 and an examiner ID input unit 76. Note that these elements constituting the control system are connected to the bus 77.

  The control unit 74 includes a processor (not shown) and a storage device (ROM, RAM, etc.) (not shown). The processor performs various operations in accordance with the control program stored in the ROM. The RAM provides the processor with a temporary work area.

  Signals and information are input to the control unit 74 from each unit of the ophthalmic microscope system 1. For example, an operation signal indicating the content of the touch operation performed on the position input panel 73 is input to the control unit 74. The control unit 74 having received the operation signal reflects the touch operation on the display information by controlling the liquid crystal display 71. For example, when a slide operation (drag operation) is performed on the position input panel 73, the control unit 74 moves the display position of the information by the distance corresponding to the slide amount in the direction corresponding to the slide direction. .

  The control unit 74 receives the left image signal 44L output from the left imaging device 43L and the right image signal 44R output from the right imaging device 43R. The left image signal 44L and the right image signal 44R simultaneously generated by the left imaging device 43L and the right imaging device 43R may be referred to as "a pair of image signals". When moving image shooting is performed, a pair of image signals correspond to left and right frames corresponding to the same timing. When a pair of image signals are input, the control unit 74 sends the liquid crystal display 71 a left display signal 45L based on the left image signal 44L and a right display signal 45R based on the right image signal 44R. Thereby, the left display image 71L based on the left display signal 45L is displayed in the left area of the display surface, and the right display image 71R based on the right display signal 45R is displayed in the right area of the display surface.

  The image display processing will be described in more detail. The storage unit 75 stores at least one predetermined value of the interpupillary distance. As a typical example of the predetermined value of the inter-pupil distance, a standard value (average value, etc. may be included standard value for each attribute such as race, gender, age, etc.) or 1 of the ophthalmic microscope system 1 There are measurements for the above users. The measured value is input, for example, using a predetermined display screen, or is acquired from a database storing information on a doctor or the like. In addition, the storage unit 75 may store information (stereoscopic aspect information) indicating an aspect of stereoscopic vision. The stereoscopic mode information includes, for example, information indicating parallel vision, information indicating introspection, and the degree of introspection (for example, convergence angle or angle information corresponding thereto).

  In particular, when there are two or more users, the identification information (examiner ID) of the user and the measured value of the inter-pupil distance are associated and stored (the same may be true for stereoscopic mode information). The examiner ID input unit 76 inputs the examiner ID to the control unit 74. The examiner ID input unit 76 may include a reader that reads information (examiner ID) recorded on the examiner's ID card. Alternatively, the examiner ID input unit 76 may include a keyboard, a ten key or a terminal for manually inputting the examiner ID. When the examiner ID is input from the examiner ID input unit 76, the control unit 74 reads out from the storage unit 75 the measured value of the interpupillary distance (and the stereoscopic aspect information) associated with the examiner ID.

  When the predetermined value of the inter-pupil distance is acquired in the above manner, the control unit 74 obtains display position information corresponding to the predetermined value (and the stereoscopic mode information). The display position information indicates the display position of each of the left display image 71L and the right display image 71R displayed on the liquid crystal display 71. Here, the left display image 71L is displayed in the left area of the display surface, and the right display image 71R is displayed in the right area. The processing for obtaining display position information from the predetermined value of the inter-pupil distance (and the stereoscopic mode information) is executed according to a predetermined control program.

  As a typical example, the left display image 71L and the right display image 71R can be displayed at positions separated in the left-right direction by a distance equal to the acquired predetermined value of the inter-pupil distance. The center position between the display position of the left display image 71L and the display position of the right display image 71R may be the boundary position C1. Alternatively, when a sensor for detecting the position of the examiner with respect to the display surface of the liquid crystal display 71 is provided, the center position of both images is arranged in front of the detected position of the examiner. The left display image 71L and the right display image 71R can be displayed. The display mode according to the first example corresponds to the parallel vision type. That is, as shown in FIG. 4, the inter-pupil distance indicating the distance between (the pupil center of (the pupil center of) the left eye EoL and (the pupil center of the right eye) of the examiner, and the left display image 71L displayed on the liquid crystal display 71. And the right display image 71R are equal in distance. In this case, since the left eye EoL and the right eye EoR look straight ahead, the vergence angle of the examiner is 0 °.

  Reference numeral 90 denotes polarized glasses 90 worn by the examiner. The polarized glasses 90 include a left polarized lens 90L applied to the left eye EoL and a right polarized lens 90R applied to the right eye EoR. In a state in which the examiner wears the polarizing glasses 90 and faces the display surface of the liquid crystal display 71 (that is, the boundary position C1 of the liquid crystal display 71 and the central position C3 in the left-right direction of the polarizing glasses 90 are substantially one And the transmission axis of the left polarization lens 90L is substantially parallel to the transmission axis of the left polarization filter 72L, and the transmission axis of the right polarization lens 90R is substantially parallel to the transmission axis of the right polarization filter 72R. Become. In the example shown in FIG. 4, the transmission axis of the left polarized lens 90L and the transmission axis of the left polarized filter 72L are both in the vertical direction (longitudinal direction), and the transmission axis of the right polarized lens 90R and the transmission axis of the right polarized filter 72R are Both are in the left-right direction (horizontal direction). Therefore, the left eye EoL recognizes only the left display image 71L, and the right eye EoR recognizes only the right display image 71R.

  When the examiner performs an operation (slide operation, pinch operation, etc.) for changing the image interval to the position input panel 73 from the state of the convergence angle of 0 ° shown in FIG. 4, the control unit 74 acquires an operation signal. The display interval between the left display image 71L and the right display image 71R is narrowed or broadened. At this time, the control unit 74 moves the left display image 71L and the right display image 71R such that the central position between the display position of the left display image 71L and the display position of the right display image 71R in the left and right direction is maintained. be able to.

  An example of a state in which the display interval between the left display image 71L and the right display image 71R is narrowed from the state shown in FIG. 4 is shown in FIG. 5, the left display image 71L is moved from the display position shown in FIG. 4 in the arrow Y1 direction (right direction), and the right display image 71R is moved from the display position shown in FIG. 4 in the arrow Y2 direction (left direction) Represents the Here, the movement distance of the left display image 71L and the movement distance of the right display image 71R are equal. As a result, the interval between the left display image 71L and the right display image 71R is narrower than the interval in the state shown in FIG. 4 (equal to the predetermined value of the inter-pupil distance). When the left display image 71L and the right display image 71R are presented to the left eye EoL and the right eye EoR, respectively, convergence occurs in the left eye EoL and the right eye EoR. The convergence angle at that time is indicated by α ° (α ≠ 0). The examiner repeats the touch operation on the position input panel 73 to adjust the interval between the left display image 71L and the right display image 71R, thereby searching for a display position at which they can be viewed stereoscopically, or adjusting the stereoscopic effect. can do.

  The left polarizing lens 90L and the right polarizing lens 90R may be switched so that the right display image 71R is presented to the left eye EoL and the left display image 71L is presented to the right eye EoR.

[Use form]
An example of usage of the ophthalmic microscope system 1 is shown in FIG. The storage unit 75 stores a plurality of combinations of the examiner ID and the measured value of the inter-pupil distance. When such information is not stored in advance, or when a new examiner or patient uses the system, the interpupillary distance measurement value or the person concerned may be used instead of inputting the examiner ID. You can enter the attributes of. Alternatively, it is also possible to apply a default value (such as the standard value described above).

(S1: Enter the examiner ID)
First, the examiner ID input unit 76 inputs the examiner ID to the control unit 74.

(S2: Determine the distance between the left and right images)
The control unit 74 acquires from the storage unit 75 the measured value (predetermined value) of the inter-pupil distance associated with the examiner ID input in step S1. Further, the control unit 74 determines an interval (positional relationship) between the left display image and the right display image based on the acquired measured value.

(S3: Start photographing of the eye to be examined)
In response to a predetermined imaging start instruction, the control unit 74 starts imaging of the eye to be examined E. This control includes lighting of the light source 51 of the illumination system 8, adjustment of the illumination diaphragm 53 (setting of the slit length), adjustment of the slit forming portion 55 (setting of the slit width), and the like. As preparation for imaging, fixation of the face of the subject, alignment of the device with respect to the eye E, setting of the positions (observation angle, illumination angle) of the observation system 6 and the illumination system 8 are performed. In this example, moving image shooting of the eye to be examined E is performed. The same process as described below can be applied to still image shooting.

(S4: Start displaying the left and right images)
The control unit 74 determines the left display image 71L based on the left image signal 44L output from the left imaging device 43L and the right display image 71R based on the right image signal 44R output from the right imaging device 43R in step S2. It is displayed on the liquid crystal display 71 at the specified interval (positional relationship).

  The left display image 71L and the right display image 71R displayed in step S4 may be a still image or a moving image. In the case of a still image, the control unit 74 controls the pair of left images simultaneously input from the left image signal 44L sequentially input from the left imaging device 43L and the right image signal 44R sequentially input from the right imaging device 43R. The signal 44L and the right image signal 44R are selected, and the left display image 71L and the right display image 71R based on them are displayed on the liquid crystal display 71. In the case of a moving image, the control unit 74 displays a frame based on the left image signal 44L sequentially input from the left imaging device 43L at a frame rate synchronized with the imaging rate, and is sequentially input from the right imaging device 43R. The process is performed in parallel with the process of displaying a frame based on the right image signal 44R at a frame rate synchronized with the imaging rate.

(S5: Change the image interval)
The examiner performs a touch operation on the position input panel 73 to change the display interval between the left display image 71L and the right display image 71R. The position input panel 73 inputs an operation signal corresponding to the touch operation to the control unit 74.

(S6: Change the distance between the left and right images)
The control unit 74 changes the display interval between the left display image 71L and the right display image 71R based on the operation signal input in step S5.

(S7: Adjustment completed?)
When the examiner can not suitably stereoscopically view the left display image 71L and the right display image 71R whose display intervals have been changed in step S6 (S7: No), the touch operation of step S5 is performed again. In response to the second touch operation, the control unit 74 executes the change of the display interval in step S6 again. Steps S5 and S6 are repeatedly executed until the left display image 71L and the right display image 71R can be suitably viewed stereoscopically (S7: Yes).

(S8: Start stereoscopic observation)
When the left display image 71L and the right display image 71R can be suitably viewed stereoscopically (S7: Yes), the examiner starts stereoscopic observation of the eye E. When the left display image 71L and the right display image 71R displayed in step S4 are still images, the examiner switches the still image display to a moving image display by performing a predetermined operation. The predetermined operation may be, for example, a predetermined touch operation on the position input panel 73. The touch operation is, for example, a tap operation on a button (software key) displayed on the liquid crystal display 71.

[Operation / effect]
The operation and effects of the ophthalmic microscope system of the embodiment will be described.

Embodiments provide an ophthalmic microscope system for stereoscopically observing an image of an eye to be examined. This ophthalmologic microscope system includes a pair of light receiving optical systems (for example, the left optical system 6L and the right optical system 6R of the observation system 6), a display control unit (for example, the control unit 74), and a selection presentation unit (for example, the polarization filter 72) Equipped with The pair of light receiving optical systems guide the light from the subject's eye to the respective imaging devices (for example, the left imaging device 43L and the right imaging device 43R). The display control unit causes the display unit (for example, the liquid crystal display 71) to display the pair of images acquired by the pair of imaging elements in the pair of light receiving optical systems in a positional relationship corresponding to the predetermined value of the inter-pupil distance. The selective presentation unit is operative to present one of the pair of images toward the left eye (E _O L) of the observer and present the other of the pair of images toward the right eye (E _O R) Do.

  According to such an embodiment, while displaying the pair of left and right images acquired by the binocular microscope at an interval corresponding to the predetermined value of the inter-pupil distance, the pair of left and right images are displayed respectively for the left eye and the right eye Because it is possible, even when a plurality of users share the system, it is not necessary to replace the eyepiece for each user.

  The ophthalmic microscope system of the embodiment may include an operation unit (for example, the position input panel 73) for changing the display interval of the pair of left and right images. The display control unit can change the positional relationship between the pair of left and right images displayed on the display unit in accordance with the input from the operation unit. Here, the operation unit may include a touch panel configured integrally with the display unit.

  According to this configuration, since the display interval of the pair of left and right images can be arbitrarily adjusted by the user, stereoscopic observation of the eye to be examined can be suitably performed.

  In an embodiment, the selection presentation unit may include a first polarization filter (for example, left polarization filter 72L) and a second polarization filter (for example, right polarization filter 72R). The first polarizing filter is provided in a first area (for example, the left area) of the display surface of the display unit, and transmits light in a first polarization direction (for example, the vertical direction). The second polarizing filter is provided in a second region (for example, the right region) of the display surface, and transmits light in a second polarization direction (for example, the lateral direction) different from the first direction. The display control unit can display one of the pair of left and right images in the first area and can display the other of the pair of images in the second area.

  According to this configuration, it is possible to realize the function of the selection presenting unit to present a pair of images toward the left eye and the right eye, respectively, with a simple configuration of a polarization filter. Note that, in this configuration, the observer uses an accessory (for example, polarized glasses 90) provided with a pair of polarized lenses corresponding to the pair of polarized filters. The clothing may be included in the selection presentation unit or may be separately prepared.

  The ophthalmologic microscope system of the embodiment may include a storage unit (for example, the storage unit 75) that stores the measured value of the inter-pupil distance of the observer. The display control unit can display a pair of left and right images at positions separated from each other by a distance corresponding to the measurement value.

  According to this configuration, since it is possible to present a pair of left and right images in a positional relationship according to the actual interpupillary distance of the observer, the observer can easily perform stereoscopic vision of these images. .

  In the embodiment, the storage unit may store the identification information (examiner ID) of the observer and the measured value of the inter-pupil distance in association with each other. Furthermore, the ophthalmologic microscope system of the embodiment may include an input unit for inputting the identification information of the observer. The display control unit can display a pair of left and right images at positions separated from each other by a distance corresponding to the measurement value associated with the identification information input by the input unit.

  According to this configuration, since the display position of the pair of left and right images can be set for each observer, the observer can easily perform stereoscopic vision of these images.

[Modification]
Several typical variations of this embodiment will be described.

  In the present embodiment, the interval between the left and right display images 71L and 71R is changed using the position input panel 73 which is the operation unit, but the configuration for changing the display interval is not limited to this. For example, hardware such as a joystick, a dial, and a button can be used to perform the same operation.

  In the present embodiment, the left and right display images 71L and 71R are stereoscopically viewed by the polarizing filter 72, but this is an example of a space division method for presenting a pair of images at different positions and performing stereoscopic vision. . As another example of the space division method, there is a configuration in which pixel rows for displaying a left display image and pixel rows for displaying a right display image are alternately arranged. In addition, as an example of a time-division method of presenting a pair of images at different timings and performing stereoscopic vision, the pair of images is alternately switched and displayed at a predetermined rate, and the observer's left is synchronized with the rate. There is a method of alternately shielding the visual field and the right visual field. Here, the alternate shielding of the left and right fields of view is realized by, for example, a fitting provided with a pair of left and right liquid crystal shutters.

  The imaging device 43 may have sensitivity in the infrared range. As a result, stereoscopic observation using invisible light (infrared light) is possible, and it is thus possible to stereoscopically observe a region / tissue suitable for observation with infrared light, such as the Meibomian gland. In addition, since it is possible to avoid miosis of the eye to be examined, it is possible to preferably perform fundus observation and the like. The illumination system 8 may separately include a light source emitting visible light and a light source emitting infrared light, or a light source emitting visible light and light including infrared light and a visible cut filter (or infrared light) And a cut filter). Alternatively, it is also possible to construct an ophthalmic microscope system dedicated to visible observation or infrared observation only.

  The observation system (a pair of light receiving optical systems) of the ophthalmologic microscope system may be additionally provided with an arbitrary configuration for performing stereoscopic imaging. For example, it is possible to perform binocular photography in a state where the left and right imaging elements are "congested". In the observation system 6 of the present embodiment, as shown in FIG. 7A, the light receiving surfaces of the left and right imaging elements 43L and 43R are parallel to each other. That is, the binocular is in a state in which the normal direction of the light receiving surface of the left imaging element 43L matches the left observation light axis O1L, and the normal direction of the light receiving surface of the right imaging element 43R matches the right observation light axis O1R Shooting is performed.

  On the other hand, as shown in FIG. 7B, with the left imaging element 43L, the normal direction of the light receiving surface of the left imaging element 43L and the normal direction of the light receiving surface of the right imaging element 43R intersect on the eye side The right imaging element 43R can be inclined inward to each other. At this time, an angle formed by the normal direction of the light receiving surface of the left imaging element 43L and the left observation light axis O1L is equal to an angle formed by the normal direction of the light receiving surface of the right imaging element 43R and the right observation light axis O1R. (Γ °). The inclination angle γ ° can be changed by the control unit 74. According to this modification, it is possible to facilitate the stereoscopic vision of a pair of images to be presented. Further, it is also possible to store the inclination angle γ ° for each user and perform control to set the inclination angle γ ° corresponding to the inputted examiner ID.

  The configurations described above as the embodiment and the modifications are merely examples for implementing the present invention. A person who intends to practice the present invention can perform any modification (addition, omission, substitution, etc.) within the scope of the present invention.

1 ophthalmologic microscope system 6 observation system 8 illumination system 43 imaging device 43L left imaging device 43R right imaging device 71 liquid crystal display 72 polarization filter 73 position input panel 74 control unit

Claims (7)

An ophthalmic microscope system for stereoscopically observing an image of an eye to be examined, comprising:
A pair of light receiving optical systems for guiding the light from the subject's eye to the respective imaging elements;
A display control unit that causes a display unit to display a pair of images acquired by the imaging elements of the pair of light receiving optical systems in a positional relationship corresponding to a predetermined value of the inter-pupil distance;
A selection presenting unit for presenting one of the pair of images toward the left eye of the observer and presenting the other of the pair of images toward the right eye ;
The display control unit changes the convergence angle by changing the distance between the pair of images
An ophthalmologic microscope system characterized in that . Equipped with an operation unit,
The ophthalmic microscope system according to claim 1, wherein the display control unit changes an interval between the pair of images displayed on the display unit in accordance with an input from the operation unit. The ophthalmic microscope system according to claim 1 , wherein the display control unit changes an interval between the pair of images such that a central position of the pair of images is maintained . A first storage unit for storing information indicating the degree of inward vision;
The ophthalmic microscope system according to any one of claims 1 to 3, wherein the display control unit changes an interval between the pair of images based on information indicating the degree of the inward vision. . The ophthalmic microscope system according to claim 4 , wherein the information indicating the degree of inward vision includes angle information corresponding to a convergence angle or the like . A second storage unit for storing the measured value of the interpupillary distance of the observer;
The ophthalmologic microscope system according to any one of claims 1 to 5, wherein the display control unit displays the pair of images at positions separated from each other by a distance corresponding to the measurement value. The storage unit associates identification information of the observer with the measured value of the inter-pupil distance and stores the information.
It has an input unit to input the identification information of the observer,
The ophthalmic microscope according to claim 6, wherein the display control unit displays the pair of images at positions separated from each other by a distance corresponding to the measurement value associated with the identification information input by the input unit. system.

Images