JP3012304B2 - Ophthalmic equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an ophthalmic apparatus that can be used in an ophthalmic clinic even at home.

[Prior Art] In recent years, as disclosed in, for example, Japanese Patent Application Laid-Open No. 61-276533, an ophthalmology in which a subject himself / herself can operate and perform positioning, measurement of intraocular pressure, and imaging. Devices are known. This type of apparatus has the convenience of easily measuring the intraocular pressure at home, for example, but requires a device that allows accurate and easy positioning because the measurer is not an expert.

FIG. 6 shows a conventional ophthalmic apparatus in which the examiner performs position adjustment. A moving table 2 mounted on a base 1 is provided with a measuring unit 3 and an operating rod 4. The examinee P's face is fixed to the fixed face support 5, and the examiner operates the operating rod 4.
Is used to move the measuring unit 3 in the three-dimensional direction with respect to the eye to be examined on the base 1 to perform positioning. At this time, a micro switch 6 is attached to the movable base 2, and it is possible to detect whether the relative position of the movable base 2 with respect to the base 1 is on the right side or on the left side according to the on / off state, and the left and right eyes are determined. Is made. This detection can be similarly performed using a photo sensor.

FIG. 7 shows a conventional ophthalmic apparatus in which the subject P himself / herself performs positioning, and a moving table 2 placed on a base 1 has a measuring unit 3 and an operation stick 4 on the subject P side. Is attached,
The face of the subject P is fixed to the face support 5 fixed to the base 1 in the same manner as in the conventional example, and the subject P performs the same alignment using the measuring unit 3. Also in this case, the microswitch 6 is attached to the lower part of the movable base 2 so that switching between the left and right eyes is determined.

[Problems to be Solved by the Invention] However, the above-mentioned conventional example is suitable for a case where relatively high-precision positioning is required. The width of the right and left eyes is large, including the device of the mechanism for switching between the left and right eyes by placing the face on a member corresponding to the optometry, and when used at home, it is large and inconvenient to carry. In addition, when the examiner moves his / her face to perform positioning,
The moving table 2, the operating rod 4, and the face supporting table 5 are not required and can be miniaturized. However, a switch for switching between the left and right eyes such as the micro switch 6 cannot be used, and the distinction between the left and right eyes of the measured value is not clear.

In the case of a hand-held ophthalmic device in which the subject measures and shoots one eye at a time, the subject himself or herself inputs the data with a switch or the like at any time to determine whether the measured value is for the right eye or the left eye. However, there is a risk that the user may forget to press the switch and interfere with the diagnosis.

SUMMARY OF THE INVENTION An object of the present invention is to provide an ophthalmologic apparatus which solves the above-mentioned drawbacks and is small in size and capable of reliably determining the right and left eyes.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in the ophthalmologic apparatus according to the present invention, measurement or imaging is performed by aligning the subject's eye to be examined one eye at a time with a single examination system. An ophthalmologic apparatus that performs a contacting member that the subject applies to a part of the face when the subject's eye is changed, and a contacting member or a detecting unit provided near the contacting member and configured to detect left and right eyes. It is characterized by having.

[Operation] In the ophthalmologic apparatus having the above-described configuration, a part of the face of the subject is brought into contact with the contact member by the left and right of the subject's eye, and the eye is positioned one by one with respect to the examination system to perform measurement. Alternatively, the left and right eyes are determined at the same time as the photographing is performed.

Embodiment The present invention will be described in detail based on an embodiment shown in FIGS.

FIG. 1 is an external view of the first embodiment, and FIG. 2 is a configuration diagram. An object section 8 for facing an eye E to be examined is provided on the subject P side of the apparatus main body 7, A bearing 9 whose center of rotation is parallel to the eye axis O of the eye E to be examined is provided on the upper part thereof.
The forehead contact member 11 is movable in parallel with the eye axis O. The forehead abutment member 11 has two curved surfaces on the left and right sides of the bearing 9 so as to respectively match the forehead of the subject P. The left curved surface viewed from the subject P has a microswitch. 12 are installed. The output of the microswitch 12 is supplied to the device body 7 by a cable 13 passing through the screw member 10 and the bearing 9.
The microcomputer 14 is connected to an internal microcomputer 14, and the output of the microcomputer 14 is a character generator 15 and a liquid crystal panel.
The output of the character generator 15 is connected to a printer 17. The measurement system or the imaging system is not shown.

In such a configuration, when the subject P performs, for example, measurement or imaging of the right eye, the right eye is positioned so as to face the objective unit 8, and the forehead is positioned on the left curved surface of the forehead abutment member 11. To perform measurement or photographing while matching the working distance. At this time, since the microswitch 12 is in the ON state, the microcomputer 14 determines that the eye E to be examined is the right eye, and uses the character generator 15 to determine that the eye E is the right eye together with the measured value or the captured image. It is displayed on the liquid crystal panel 16 or output to the printer 17. When measuring the left eye, the forehead abuts on the right curved surface of the forehead abutment member 11 and changes. Therefore, the microswitch 12 is turned off, and the microcomputer 14 determines that the left eye is being measured.

It should be noted that even if a chin rest member or a member supporting the lower part of the eye is used in place of the forehead contact member 11, there is no problem as long as the working distance can be determined to some extent by contact. Further, two concave curved surface portions are provided as in the above-described embodiment, and when the subject P changes his / her eye when examining each eye, it should be left-right symmetric so that the subject P can abut sufficiently. Although it is desired, even if the shapes are exactly the same in consideration of cost reduction of parts and processing problems, there is no problem if the subject P can change the forehead part.

FIG. 3 is a block diagram of the second embodiment, and FIG. 4 is a side view of the second embodiment. The same reference numerals as in FIG. 1 denote the same members. In the second embodiment, instead of the microswitch 12 of the first embodiment, an optical sensor 17 having a light emitting portion and a light receiving portion of an LED is attached to the end of the left curved surface portion of the forehead contact member 11. Have been.

As shown in FIG. 3, when the subject P examines the right eye, the forehead abuts against the left curved surface of the forehead abutment member 11, so that the luminous flux from the photoelectric sensor 17 indicates the profile of the subject P , The reflected light returns to the light receiving section, the photoelectric sensor 17 is turned on, and the microcomputer 14 can determine that the right eye is being measured.

FIG. 5 is a block diagram of a third embodiment. In this embodiment, the device body 7 has a left-side curved surface portion for receiving a nose.
11a, a forehead contact member 11 having a right curved surface portion 11b is attached, and a light emitting portion 18 and a light receiving portion 19 of a transmission type sensor are attached to both ends of the left curved surface portion 11a.
The nose blocks the light beam of the sensor so that it can be determined whether the eye is the right eye or the left eye.

In the above-described second and third embodiments, the photoelectric sensor may be an ultrasonic sensor, and these embodiments are applied to an optometry apparatus in which the subject P itself performs alignment. Of course, the present invention may be applied to an ophthalmologic apparatus for optometry.

[Effects of the Invention] As described above, in the ophthalmologic apparatus according to the present invention, since the left and right eyes are determined by the subject changing a part of the face to the member, the detection is reliable and the It is effective to apply it to the ophthalmic device operated by the patient himself, and since the subject has a simple configuration and changes his face by moving his face,
The moving amount of the inspection system in the left-right direction is small, and the size can be reduced.

[Brief description of the drawings]

1 to 5 show an embodiment of an ophthalmologic apparatus according to the present invention. FIG. 1 is an external view of the first embodiment, FIG. 2 is a configuration diagram, and FIG. 3 is a second embodiment. Fig. 4 is a side view,
FIG. 5 is a block diagram of the third embodiment, and FIGS. 6 and 7 are block diagrams of a conventional example. Reference numeral 7 denotes an apparatus main body, 8 denotes an objective unit, 11 denotes a forehead contact member, 12 denotes a microswitch, 17 denotes a photoelectric sensor, 18 denotes a light emitting unit, and 19 denotes a light receiving unit.

Claims (5)

(57) [Claims] In an ophthalmic apparatus which performs measurement or imaging by aligning the eye to be examined with a single examination system one eye at a time, when the eye to be examined is changed, the examinee touches a part of the face. An ophthalmologic apparatus comprising: a contact member to be changed; and a detection member provided near the contact member or near the contact member to detect left and right eyes. 2. The ophthalmologic apparatus according to claim 1, wherein said detecting means includes a micro switch. 3. The ophthalmic apparatus according to claim 1, wherein said detecting means includes a photoelectric sensor. 4. The ophthalmic apparatus according to claim 1, wherein said detecting means has an ultrasonic sensor. 5. The ophthalmologic apparatus according to claim 1, wherein the subject can perform a self-examination by himself / herself.