JP2000107128A - Ophthalmic device, and opening/closing means for its opening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dust and dirt from entering, and also, prevent an objective lens from being fouled by arranging an opening/closing means for an opening in the vicinity of the opening for observation and photographing of the eye of a subject, and optionally change the opening degree of the photographing opening. SOLUTION: In the vicinity of an opening 20 for the observation- photographing of a subject's eye E, which is formed on a retinal camera 1, a lens cap 17 which is an opening/closing means for an opening to cover the subject's eye E side of an objective lens 3, is arranged. Then, the lens cap 17 is equipped with a plurality of blades 21, an opening/closing ring 22 and a driving gear 23, and by rotating the driving gear 23 clockwise A, the opening/ closing ring 22 is rotated counterclockwise B, and as a result, respective blades 21 rotate counterclockwise with a pivot pin 24 as the pivotal center, and the distal end portions of the blades 21 and displaced in the direction to separate from the center of the lens cap 17, and the opening degree of the opening of the lens cap 17 can be displaced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmologic apparatus and an opening and closing means for the apparatus. More specifically, each apparatus for observing and photographing the anterior segment of the subject's eye, corneal imaging, corneal shape observation, fundus observation and imaging, and devices such as tonometer and diopter, and these imaging apertures are provided. The present invention relates to an opening / closing means capable of exerting an action such as dust prevention.

[0002]

2. Description of the Related Art Conventionally, apparatuses for observing and photographing the above-mentioned parts of an eye to be inspected have been used in the field of ophthalmological medicine for examination of an eyeball. Such an apparatus illuminates the subject's eye with illumination light and receives the reflected light to observe and photograph, so that
Usually, an objective lens and a photographing aperture through which illumination light and reflected light pass are provided at a position near the eye to be examined.

[0003] When such an apparatus is used for a subject, an alignment operation for aligning the optical axis of the apparatus with a predetermined portion of the eye to be examined is usually performed first. There are various alignment operations, and all of them are performed while the inspector or the apparatus automatically observes the eye to be inspected. For example,
JP-A-7-362 and JP-A-7-100111
Corneal imaging apparatus disclosed in Japanese Patent Application Publication No.
The fundus camera disclosed in Japanese Patent No. 75921 irradiates the anterior segment with parallel light, which is an alignment indicator light, from the front with the eye to be inspected fixed, and reflects the image of the alignment indicator light reflected on the surface of the anterior segment. While observing, alignment is performed as follows. On the monitor screen of the apparatus, the optical axis of the observation optical system or the photographing optical system of the apparatus is set at the center, and an image of the alignment index light (hereinafter, Purkinje image) projected on the monitor screen is displayed on the monitor screen. The observation optical system or the photographing optical system of the apparatus is moved so as to coincide with the center (the optical axis). Therefore, the optical axis of the observation optical system or the photographing optical system coincides with the vertex of the surface of the eye to be inspected, that is, the point on the surface of the eye to be inspected which is closest to the device. In addition, the observation / photographing part is changed by rotating the subject's eye by a small angle as needed. Then, in parallel with or after this alignment operation, a focusing operation for making the focus of the observation optical system or the imaging optical system coincide with the observation / imaging part is performed.

[0004]

However, in the above-mentioned apparatus, if the objective lens becomes dirty, it affects the observed image and the photographed image. In particular, in the case of a fundus camera, even a part of the dirt on the objective lens affects the captured image.
Further, in the case of another apparatus having an imaging opening, it is necessary to prevent foreign substances and dust from entering the apparatus from the opening.

When such a device is used for a subject, when the subject faces his or her own head to the device, the device is generally provided with a guide or a forehead as a guide. Only the contact portion is formed.

Therefore, even if the subject looks at the photographing aperture or the objective lens with his / her head facing the apparatus and looks at the photographing aperture or the objective lens, the subject can fix the fixation lamp or the alignment from any position. Since the index light can be recognized, the anterior eye part may be out of the observable range and may not be displayed on the monitor screen depending on the position of the eye to be inspected. In such a case, the conventional inspector instructs the subject to move the head, or if the jaw table is movable, the examiner moves the jaw table to cause the anterior eye to move the monitor screen. I am trying to enter. However, in such a method, it takes a long time to move to the alignment operation, and the alignment operation also requires a long time. As a result, the subject is forced to be nervous for a long time.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problem, and it is intended to prevent dust from entering and prevent the objective lens from being stained, and to allow a subject to fixate a fixation lamp or alignment index light. Opening and closing means capable of preliminary alignment for positioning the subject's eye in a substantially constant position and in a fixed direction with respect to the fixation lamp or the alignment index light by making it look within a narrower range than the objective lens, and this opening and closing It is an object of the present invention to provide an ophthalmologic apparatus comprising the means.

[0008]

That is, the opening and closing means of the present invention is disposed around an opening for observing and photographing the eye to be inspected formed in the ophthalmic apparatus, and arbitrarily changes the opening degree of the photographing opening. Is configured to obtain.

Therefore, when the ophthalmologic apparatus is not used, by closing the opening and closing means, it is possible to prevent dust from entering the apparatus and to prevent contamination of the objective lens. In addition, when the subject is to be able to look through the photographing opening or the objective lens during use, the field of view of the subject's eye is regulated to be narrow by reducing the opening of the opening / closing means. Can be located. As a result, the subsequent alignment operation can be performed quickly and easily. Therefore, it can be said that preliminary alignment is performed by looking through the narrow opening.
Then, at the time of observation and photographing, the photographing aperture may be fully opened.

The photographing opening can be changed to a fully closed position, an intermediate opening position around the optical axis of the ophthalmic apparatus, and a full opening position, thereby preventing dust from entering and preventing the objective lens from becoming dirty. Of course, quick alignment and photographing are possible.

In this case, the opening / closing means is constituted so that it can be opened and closed radially around the optical axis of the objective lens, or can be constituted by two cover members which can be opened / closed. By providing a small semicircular notch at the center of the matching edge to prevent dust intrusion and contamination of the objective lens, the optical aperture is used to prevent the subject from looking through the imaging aperture or objective lens. By setting a small opening centered at the center, the eye to be inspected can be directed at a substantially fixed position and a fixed direction along the optical axis of the apparatus. That is, since the optical axis of the apparatus is located near the vertex of the eye to be inspected (the point closest to the apparatus on the surface of the eye to be inspected), the subsequent alignment operation can be performed more quickly and easily.

An ophthalmologic apparatus according to the present invention includes a detecting means for detecting a subject, a photographing starting means for starting a photographing operation, and one of the above-mentioned opening and closing means. The opening degree of the opening / closing means is normally in a fully closed state. When the subject is detected by the detecting means, the opening degree becomes an intermediate opening degree. It is configured to be closed.

Therefore, the opening / closing means automatically detects the subject (for example, the face or the eyes) approaching the apparatus and opens to an intermediate opening when used. The shooting opening is automatically closed when the shooting is completed without any influence on the shooting. Therefore, the function of the opening opening / closing means is automatically performed quickly and accurately, and further, it is possible to prevent forgetting to close the photographing opening.

In this ophthalmologic apparatus, an alignment optical system for irradiating the eye to be inspected with the alignment index light from the light source for alignment through the objective lens for the eye to be inspected; In the one provided with an objective lens and a fixation target optical system for fixing the fixation target through the opening of the opening and closing means,
If the fixation target is a so-called illuminating star, the opening of the opening and closing means is a so-called sight gate, and the functions of the opening and closing means and the ophthalmologic apparatus are more accurately performed.

The fixation target that the subject should see through the imaging opening includes an alignment light source in addition to the fixation lamp.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an ophthalmologic apparatus according to the present invention.

FIG. 1 is a schematic layout diagram showing an example of a fundus camera which is an embodiment of the ophthalmologic apparatus of the present invention.

As shown in the figure, the fundus camera 1 has an illumination optical system 4 which includes a light source 2 for photographing, an objective lens 3 and the like, and illuminates the fundus through the pupil of the eye E to be examined. It has a focusing optical system 6 for irradiating the fundus with focusing index light provided with a light source 5 for auto-focusing, and further has a camera 7 for photographing and photographing the fundus based on the illumination light reflected on the fundus. And a fundus photographing optical system 8 for performing focus detection based on the focus index light reflected on the fundus.

Further, prior to the focusing and photographing operations, a working distance detecting optical system 9 for setting an appropriate working distance between the eye E and the fundus photographing optical system 8, and a fundus photographing optical system An alignment optical system 10 for aligning the optical pupil 8 with the center of the pupil of the eye E is also provided.

The illumination optical system 4, focusing optical system 6, fundus photographing optical system 8, working distance detecting optical system 9, and alignment optical system 10 are all a base 1a in the fundus camera 1 (see FIGS. 2 and 3). The base 1a is provided with a driving device 1b
(See FIGS. 2 and 3).
(See FIG. 3 and FIG. 3). Here, the X axis is an axis orthogonal to the paper surface, the Y axis is a vertical axis, the Z axis is orthogonal to both the XY axes, and is an axis parallel to the optical axis V of the fundus imaging optical system 8.

The working distance detecting optical system 9 irradiates the working distance detecting index light from the working distance detecting light source 11 obliquely to the anterior segment of the eye E to be examined, and reflects the indicator light reflected by the anterior segment. The light is detected obliquely by the light receiving element 12 for detecting the working distance. The driving device 1b controls the working distance by moving the base 1a in the Z-axis direction so that the working distance detecting index light is detected.

The alignment optical system 10 collimates the infrared light from the alignment light source 13 through the condenser lens 14 and the objective lens 3 and irradiates the collimated light from the front to the anterior segment of the eye E to be examined. The image is captured by the alignment camera 15, and alignment is performed by matching the corneal reflection image to the center of the captured screen (corresponding to the optical axis V of the fundus imaging optical system 8). For this purpose, the driving device 1b performs the alignment by moving the base 1a in the XY axis directions. That is, the optical axis V of the fundus imaging optical system 8 is matched with the vertex of the eye E (the part of the surface of the eye E closest to the device 1). The alignment optical system 10 is also provided with a fixation lamp 16 for fixing the subject's eye in a fixed direction by fixing the subject's eyes. The fixation index light from the fixation lamp 16 is configured to reach the subject's eye E on the optical path of the alignment optical system 10.

As shown in FIGS. 1, 2 and 3, in the fundus camera 1, the eye E of the objective lens 3 is provided.
A lens cap 17 as an opening / closing means for covering the side is provided. As shown in the figure, the objective lens 3 is disposed at an end of the lens barrel 18 containing the fundus imaging optical system 8 and the alignment optical system 10 on the eye E side. In addition, the fundus camera 1 includes a housing 19 that covers substantially the entirety.

FIG. 2 shows a lens cap 17 fixed to the end of the lens barrel 18 on the eye E side. On the other hand, FIG. 3 shows that the lens cap 17 is fixed to the photographing opening 20 of the housing 19. In each case, the objective lens 3 (and thus the lens cap 17) is exposed from the photographing opening 20 of the housing 19. As will be described later, since the center of the lens cap 17 is disposed so as to coincide with the optical axis V of the objective lens 17, the lens barrel 1 is required to be easily coincident.
It is convenient to attach it to the end of 8. The lens cap 17 does not need to be removed at the time of photographing, and is configured to open and close automatically. That is, a circular opening is radially expanded from the center of the lens cap 17 substantially coincident with the optical axis V of the objective lens 3 and is fully opened, and is also centripetally reduced and fully closed. .

FIG. 4 shows details of the lens cap 17. The lens cap 17 includes a plurality of blades 2 (five in this embodiment, but the number is not limited).
1, an opening / closing ring 22 and a drive gear 23 are provided.
The inner edge of each blade 21 is substantially arcuate. In the drawing, the outline of the objective lens 3 is indicated by a two-dot chain line. Each blade 21 is rotatably supported by a machine frame (not shown) of the lens cap 17 so as to be rotatable about its pivot pin 24, and a base end 21 a is engaged with an engagement pin 26 of the opening / closing ring 22. The opening / closing ring 22 is formed with teeth 27 meshing with the drive gear 23 along the outer periphery thereof.

FIG. 4A shows the lens cap 17 in the fully closed state.
Is shown. When the drive gear 23 is rotated clockwise (direction of arrow A) from this state, the opening / closing ring 22 rotates counterclockwise (direction of arrow B). As a result, each blade 21 rotates counterclockwise (in the direction of arrow C) about the pivot pin 24, so that the tip 21b of the blade 21 is displaced away from the center of the lens cap 17 and A substantially circular opening H having a continuous arc-shaped inner edge is generated (see FIG. 4B). The center of the opening H is the center of the lens cap 17 and substantially the center of the objective lens 3, and consequently is substantially at the optical axis V of the illumination optical system 4, the fundus photographing optical system 8 and the alignment optical system 10. Matches. The opening H of the lens cap 17 shown in FIG. 4B is in a state of an intermediate opening degree, and the diameter of the opening H is smaller than the diameter of the objective lens 3, which is a state to serve as a sightgate described later. .

FIG. 4 (c) shows a state in which the drive gear 23 is further rotated in the direction of arrow A to fully open the opening H. As will be described later, the fundus is photographed in this fully opened state. The curvature of the arc-shaped inner edge of each blade 21 is determined so that the opening H is substantially a perfect circle when fully opened. The diameter of the opening H when fully opened is set to be substantially the same as or larger than the diameter of the objective lens 3. Therefore,
The lens cap 17 when fully opened does not limit the field of view.

FIG. 4D shows a state where the opening H is in the process of being fully opened to fully closed. That is, the driving gear 23
Is rotated counterclockwise (direction of arrow D), the opening / closing ring 22 rotates clockwise (direction of arrow E), and each blade 21 rotates in the clockwise direction (direction of arrow F) about the pivot pin 24. Rotating, the tip 21 of the blade 21
b approaches the center of the lens cap 17 and finally reaches the fully closed state.

In the fully closed state, the lens cap 17 completely covers the objective lens 3 and thus has a dustproof effect. In addition, the finger or the like cannot contact the objective lens to prevent dirt. In addition, as shown in FIGS. 4B and 4D, when the opening H is at the intermediate opening degree, the lens cap 17 functions as a stop, in other words, as a sight gate. That is, at the time of fundus photography, the subject is allowed to look into the objective lens 3 as described above, and the fixation lamp 1 is passed through the objective lens 3.
The eye axis of the subject's eye E is fixed in a fixed direction by fixing the eye 6. However, in this case, since the visual field is wide, the fixation lamp can be visually recognized even from a position away from the optical axis V of the objective lens 3. On the other hand, alignment prior to photographing is performed using the optical axis V of the fundus photographing optical system 8 (consequently, the objective lens 3).
Is aligned with the vertex of the eye E. If the vertex of the eye E is separated from the optical axis V of the fundus imaging optical system 8 as described above, the alignment operation is not performed quickly. Not done. Therefore, if the fixation lamp 16 is fixed through the small aperture H in the aperture state, the vertex of the eye E to be examined approaches the optical axis V of the fundus imaging optical system 8. This is so-called preliminary alignment. As a result, rapid alignment can be continued. For this reason, it can be said that the lens cap 17 having the intermediate opening degree is an illuminator when the fixation lamp 16 is used as a star. Thus, the present lens cap 17
Has a function as a cap and a function as a sight gate.

As shown in FIGS. 2 and 3, the fundus camera 1 has sensors 28 and 29 for detecting a subject.
It has. The sensors 28 and 29 detect that the subject has come to look into the objective lens 17 of the retinal camera 1, and the detection signal from the sensors 28 and 29 starts opening the opening H of the lens cap 17.

The sensor 28 shown in FIG. 2 is a touch sensor, and is mounted on a forehead 30 fixed to a portion of the housing 19 above the objective lens 17. When the subject sets his / her head in front of the retinal camera 1 and brings the forehead into contact with the forehead 30, the touch sensor 28 detects this and transmits a detection signal to the control circuit 31. The control circuit 31 receives the detection signal and drives a rotation driving device (not shown) of the lens cap 17 to rotate the driving gear 23.

The sensor 29 shown in FIG.
9 and includes an irradiation unit 29a having a light emitting diode that emits infrared light and a detection unit 29b having a sensor that receives the infrared light. When the subject approaches to set the head in front of the fundus camera 1,
The detection unit 29b detects infrared light reflected on the face of the subject, and a detection signal from the detection unit 29b rotates the drive gear 23 via the control circuit 31.

The fundus camera 1 shown in FIGS. 2 and 3 is provided with a photographing start button 33. When the examiner operates this photographing start button 33, the fundus camera 1 continues the alignment operation. While shooting.

The type of the sensors 28 and 29 and the attachment site of the lens cap 17 do not particularly correspond to each other, and any of them can be arbitrarily selected. The sensors are not limited to the types shown in FIGS. 2 and 3.

The operation of the fundus camera 1 having such a configuration, particularly, the operation of the lens cap 17 will be described.

Before starting the examination of the fundus of the subject, the fundus camera 1
The opening H of the lens cap 17 is fully closed (FIG. 4A). First, when the examiner turns on the main power of the fundus camera 1 and the subject sets his / her head in front of the fundus camera 1, the sensor 28 detects the subject. The sensor 28 transmits a detection signal to the control circuit 31, and the control circuit 31 receives the detection signal and drives a rotation driving device (not shown) of the lens cap 17 to rotate the drive gear 23, thereby opening the opening H of the lens cap 17. Opening to an intermediate opening (FIG. 4B). The subject fixes the fixation light 16 through the opening H having the intermediate opening degree. In this state, the vertex of the subject's eye is located near the optical axis V of the fundus imaging optical system 8, and preparatory alignment has been performed.

Then, when the examiner presses the photographing start button 33, an opening signal is transmitted from the button 33 to the control circuit 31, and the control circuit 31 receives the opening signal and drives a rotary driving device (not shown) of the lens cap 17. Drive gear 23
Is rotated to fully open the opening H (FIG. 4 (c)). Subsequently, setting of an appropriate working distance by the working distance detecting optical system 9,
The alignment operation by the alignment optical system 10 and the focusing operation by the focusing optical system 6 are automatically performed, and the fundus photographing optical system 8 photographs the fundus. The above operations of the working distance detecting optical system 9, the alignment optical system 10, and the focusing optical system 6 may be started during the above-described preliminary alignment.

When the photographing of the fundus is completed, a rotary driving device (not shown) is driven via the control circuit 31 to close the opening to an intermediate opening to prepare for the next photographing (FIG. 4).
(d)). When the subject is separated from the fundus camera 1 after all the predetermined photographing is completed, the sensor 28 detects this and closes the opening H of the lens cap 17 through the control circuit 31 (FIG. 4A). ).

In the present invention, the sensor 28,
The present invention is not limited to the ophthalmologic apparatus provided with 29. Instead of providing the sensors 28 and 29, the opening degree of the lens cap 17 and the opening / closing lid member 41 described later may be adjusted by an inspector.

For example, the examiner turns on the main power supply of the retinal camera 1 so that the opening H is in the state of the illuminator, which is an intermediate opening, and the examiner looks at the illuminator, and then the examiner presses a shooting start button. 33, the opening H may be fully opened, and when the photographing is completed, the opening H may be brought into the state of the illuminator at the intermediate opening again, and the opening H may be completely closed when the main power is turned off.

Alternatively, after the inspector turns on the main power,
The opening H of the lens cap 17 or the like may be set to an intermediate opening degree by pressing a shooting preparation button (not shown), and the opening H may be completely closed by turning off the main power supply.

In the above embodiment, a fixation lamp is taken as an example of an object (a so-called illuminating star) to be fixed by the subject through the opening H of the lens cap 17, but the present invention is limited to a fixation lamp. However, the present invention is also applicable to a case where the alignment light source is a sight.

FIG. 5 shows an opening / closing lid member 41 which is another embodiment of the opening / closing means of the present invention. The opening / closing lid member 41 is fixed to the end of the lens barrel 18 on the eye E side or the photographing opening 20 of the housing 19.
Upper and lower fixed covers 42a, 42b fixed in a fully opened state
And the upper and lower lids 43a, 4a, which can be fully opened by completely covering the openings formed by the fixed covers 42a, 42b from above and below.
3b. In the fully closed state shown in FIG. 5A, it is possible to prevent dust from entering and prevent the objective lens 3 from being stained. Fixed covers 42a, 42b and opening / closing lid 43
Both a and 43b have a partially spherical shell shape. Lid 43
a and 43b are attached to the lens barrel 18 or the photographing opening 20 so as to be able to swing up and down around a base 44 thereof.
The upper and lower opening / closing lids 43a and 43b are swung synchronously in mutually opposite directions via. Of course, the transmission belt 46
Other known transmission means may be used.

As shown, substantially semicircular notches 47a and 47b are formed at the center of the lower edge of the upper opening / closing lid 43a and the center of the lower edge of the lower opening / closing lid 43b, respectively. Therefore, as shown in FIG. 5B, when both the open / close lids 43a and 43b are slightly opened, the notches 4
7a and 47b form a circular opening H having a small diameter, that is, a diameter smaller than the diameter of the objective lens 3. This open state is maintained, and the above-described function as the sightgate is exhibited. Both open / close lids 43a and 43b are attached so that the small-diameter opening H is formed at a position centered on the optical axis of the objective lens.

Then, as shown in FIG. 5 (c), when the both open / close lids 43a and 43b are further opened and fully opened, the objective lens 3 is completely exposed between the open / close lids 43a and 43b.

It should be noted that a mechanism equivalent to the above-mentioned opening / closing lid member 41 may be one in which the upper and lower opening / closing lids 43a and 43b are formed on the valve closing.

The above-mentioned lens cap 17 and other ophthalmologic devices such as anterior segment observation and photographing, corneal photographing, corneal shape observation, fundus observation and photographing, and tonometer and diopter are also used. By disposing the opening / closing lid member 41, the intrusion of dust and the alignment operation can be completed easily and quickly. That is, in an apparatus in which the objective lens is not disposed at a position near the eye to be examined in the apparatus, the lens cap 17 and the opening / closing lid member 41 may be disposed in the photographing opening of the apparatus.

[0048]

According to the present invention, intrusion of dust and contamination of the objective lens can be prevented by closing the opening of the opening / closing means such as the lens cap. Further, when the subject is allowed to look through the photographing opening or the objective lens during use, the field of view of the subject's eye is regulated to be narrow by reducing the opening degree of the opening / closing means. Can be performed. As a result, the subsequent alignment operation can be performed quickly and easily. And observation
At the time of shooting, the shooting aperture may be fully opened.

[Brief description of the drawings]

FIG. 1 is a schematic layout diagram showing a fundus camera as an embodiment of an ophthalmologic apparatus to which a lens cap of the present invention is applied.

FIG. 2 is a schematic sectional view showing one embodiment of the fundus camera of FIG.

FIG. 3 is a schematic sectional view showing another embodiment of the fundus camera of FIG. 1;

FIGS. 4 (a) to 4 (d) each show an embodiment of the opening / closing means of the present invention.

5 (a) to 5 (c) are front views showing another embodiment of the opening / closing means of the present invention.

[Explanation of symbols]

1 ... fundus camera, 2 ... light source for photography, 3 ...
-Objective lens, 4-Illumination optical system, 5-Light source for automatic focusing, 6-Focusing optical system, 7-Camera for photographing, 8-Optical system for photographing fundus, 9-・ Working distance detecting optical system, 10 ・ ・ ・ Alignment optical system, 11
... Light source for detecting working distance, 12 ... Light receiving element for detecting working distance, 13 ... Light source for alignment, 14.
・ Condenser lens, 15 ・ ・ ・ Alignment camera, 1
6 ... fixation light 17 ... lens cap 18
..Barrel, 19 ... housing, 20 ... photographing aperture, 21 ... blade, 22 ... open / close ring,
23: drive gear, 24: pivot pin, 26
... engagement pin, 27 ... teeth, 28, 29 ... sensor, 30 ... forehead 31 ... control circuit, 33 ... shooting start button, 4
DESCRIPTION OF SYMBOLS 1 ... Opening / closing lid member, 42a, 42b ... Fixed cover, 43a, 43b ... Opening / closing lid, 44 ... Base part,
45: Servo motor, 46: Transmission belt, 4
7a, 47b ... notch, H ... opening,

Claims (4)

[Claims] 1. An opening / closing means for an ophthalmologic apparatus, which is provided around an opening for observing and photographing an eye to be inspected formed in the ophthalmic apparatus and configured to change an opening degree of the imaging opening. 2. The opening and closing of an ophthalmologic apparatus according to claim 1, wherein the photographing opening can be changed to a fully closed state, an intermediate opening degree around the optical axis of the ophthalmic apparatus, and a fully opened degree. means. 3. A photographing means for detecting a subject, a photographing start means for starting a photographing operation, and
Or an opening / closing means according to any one of the items 2, wherein the opening degree of the opening / closing means is an intermediate opening degree when the subject is detected by the detection means from a fully closed state. The ophthalmologic apparatus is configured to be fully opened by the operation of the photographing start means and fully closed by the end of the photographing. 4. An alignment optical system for transmitting an alignment index light from an alignment light source through the objective lens for the eye to be inspected and irradiating the eye with the eye, an objective lens for the eye to be inspected by the subject, and the objective lens for the eye. The ophthalmologic apparatus according to claim 3, further comprising a fixation target optical system for fixing the fixation target through the opening of the opening / closing means.