WO2014129700A1

WO2014129700A1 - Upright indirect ophthalmoscope

Info

Publication number: WO2014129700A1
Application number: PCT/KR2013/003706
Authority: WO
Inventors: 양연식; 김영호
Original assignee: 연세대학교 원주산학협력단
Priority date: 2013-02-19
Filing date: 2013-04-30
Publication date: 2014-08-28
Also published as: KR101325018B1

Abstract

An upright indirect ophthalmoscope includes a first body part and an image passing part. The first body part includes an observation part where eyes of a subject to be examined are positioned and an optometry part where an optometry part of an examining person is positioned. The image passing part is provided in the inner part of the first body part and sends a fundus image from the subject to be examined to the examining person, where the fundus image is subjected to refraction and reflection and sent and an external eye image is sent directly. Accordingly, the examining person can examine and treat a subject to be examined through a fundus image having the same right and left and top and bottom positions, and thus improved usability is provided.

Description

Indirect Ophthalmoscope

The present invention relates to an indirect ophthalmoscope, and more particularly, to an indirect ophthalmoscope used for examination of the fundus of a subject.

In recent years, as the proportion of retinal diseases that can lead to blindness in eye care is gradually increasing, the necessity of examination using an indirect vision ophthalmoscope for the diagnosis and treatment of retinal diseases is increasing.

In the case of an indirect image ophthalmoscope mainly used until recently, as shown in FIG. 1, the first and

second reflectors

13 and 14 after the image of the fundus 11 of the examinee are focused through the condenser lens 12. Are reflected by and provided to the left and

right eyeballs

15 and 16 of the optometrist, respectively.

However, in the case of the above-described indirect ophthalmoscope, since the image of the fundus 11 of the subject looks upside down and left and right, the beginners have difficulty in visual observation, and even the experienced retina specialist may have no problem in image observation. It is very difficult to simultaneously operate injections and instruments for the procedure.

Therefore, there was a problem that the inconvenience of both the examinee and the ophthalmologist was increased due to an increase in the time of the examination and the procedure for the retinal disease.

Accordingly, the technical problem of the present invention was conceived in this respect, the object of the present invention relates to a direct indirect ophthalmoscope to improve the user's convenience.

According to an embodiment for realizing the above object of the present invention, the direct indirect ophthalmoscope includes a first body portion and an image passing portion. The first body part includes a test part in which an eye of a test subject is located, and an optometry part in which an optometry part of an optometrist is located. The image passing part is disposed inside the first body part to transmit the fundus image of the subject to the optometrist, wherein the fundus image is refracted and reflected, and the external eye part image is directly transmitted.

In an embodiment, the fundus image passing through the image passing part may have the same positions of up, down, left and right.

In example embodiments, the image passing part may include a condenser condensing the fundus image, a first prism refracting the fundus image passing through the condensing part, and a second prism refracting the refraction image passing through the first prism. , And a reflector reflecting the refraction image passing through the second prism.

In example embodiments, the second prism may include a pair of left and right second prisms to provide a refractive image passing through the first prism to the reflector.

In one embodiment, the reflector may include a pair of left and right reflectors to provide left and right eyes each with a refraction image passing through the left and right second prisms.

In one embodiment, the first prism is an isosceles triangular prism, and the second prism may be a schmidt prism.

In one embodiment, the reflector may include a reflector reflecting the refraction image passing through the second prism, and a transmission portion through which the fundus image of the examinee passes directly.

In an embodiment, the first body portion may include a window disposed at a position corresponding to the first prism, and left and right inspected portions disposed at both sides of the window.

In one embodiment, the second body portion is fixed to the upper portion of the first body for supporting the forehead and head of the optometrist.

According to the embodiments of the present invention as described above, the eye fundus of the examinee is refracted by the first and second prisms, so that the positions of the top, bottom, left and right are the same, so that convenience and accuracy are improved in the optometry and the procedure of the optometrist. Can be.

In addition, since the external eye part of the subject is not refracted by the first and second prisms, and is directly provided to the optometrist through the penetrating part of the reflector, the optometrist observes the external eye part of which the positions of the upper, lower, left, and right sides of the subject are not changed. The location can be determined more easily. Thereafter, the optometrist may similarly examine the fundus image provided with the same positions of the top, bottom, left and right. Thus, the convenience of the optometrist's optometry and procedure can be improved, and time can be saved.

In particular, since the subject's fundus image and the external eye part are provided to the optometrist through the optometrist, the optometrist can more easily find the position of the pupil of the examinee.

In this case, since the reflector includes a reflector and a transmission unit, the subject's fundus image is reflected and passes through the external eye image, thereby providing a fundus image with no change in up, down, left, or right through one reflector, and easily positioning the pupil. It has the advantage to be found.

1 is a schematic diagram schematically showing an optometry system of an indirect ophthalmoscope in the prior art.

2A and 2B are perspective views illustrating an optometrist side and an examinee side of a direct indirect ophthalmoscope according to an embodiment of the present invention, respectively.

FIG. 3 is a perspective view illustrating an image passing part of the direct indirect ophthalmoscope of FIG. 2A.

4 is a schematic diagram schematically illustrating an optometry system in the image passing part of FIG. 3.

FIG. 5A is a front view illustrating the left / right reflector of FIG. 4, and FIG. 5B is a schematic diagram schematically illustrating an image passing through the right reflector.

* Explanation of the sign

10: Indirect Ophthalmoscope on the Island 100: Indirect Ophthalmoscope on the Island

110: first body portion 111: window

112: optometry 115: subject

120: second body portion 121: fixed portion

130: image passing part 131: first prism

132, 133: second prism 136, 137: reflector

139: light collecting unit 150: transmission unit

151: reflector

As the inventive concept allows for various changes and numerous modifications, the embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprise" or "consist of" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

2A and 2B, the indirect ophthalmoscope 100 according to the present embodiment includes a first body part 110 and a second body part 120.

The first body 110 has a predetermined space therein and is formed flat, the optometrist 112 is located on the side of the optometrist, the window 111 and the examinee 115 is located on the examinee side.

The optometrist 112 on the side of the optometrist is formed with a pair of the left optometrist 113 and the right optometrist 114 to provide a fundus image and an external eye image of the subject, respectively. The left and

right optometry units

113 and 114 are located at both sides, respectively, and are arranged to coincide with the positions of both eyes of the optometrist.

In general, the fundus (fundus) is a part that is seen when looking into the inside of the eye through the pupil, and refers to a combination of the retina and retinal vessels, optic nerve papilla, choroid, etc. .

The window 111 of the examinee side is disposed at a position corresponding to the first prism 131 which will be described later, and the window 111 is located at the center of the examinee side of the first body part 110.

The test part 115 also includes left and

right test parts

117 and 116 and is arranged to coincide with the positions of the left and right eye of the testee. In this case, the left test part 117 of the test part 115 is disposed in line with the right eye part 114 of the optometry part 112, and the right test part 116 is connected to the left eye part 113. Arranged in line. Thus, the image of the external eye of the examinee may be provided to the optometrist as it is through the optometry without being reflected or refracted through a separate lens.

That is, the external eye part of the examinee is directly provided to the right eye of the optometrist through the right eyepiece 114, and the external eye part is directly provided to the left eye of the optometrist through the left eyepiece 113.

The second body portion 120 extends from the center portion of the first body portion 110 and extends upward in a direction crossing the extending direction of the first body portion 110. Thus, the first body portion 110 and the second body portion 120 has a 'ㅗ' shape as a whole. In this case, the optometrist positions and fixes the forehead portion of the face on the second body portion 120 and positions the left and right eyeballs on the left and

right optometrists

113 and 114, respectively.

On the other hand, although not shown, a fixing band or fixing band is fixed to the fixing portion 121 connected to the upper portion of the second body portion 120, it is possible to fix the forehead and head of the optometrist.

In addition, although not shown, a light providing part or a light generating part for providing light to the image passing part 130 disposed inside the first body part 110 may be disposed inside the second body part 120. have.

FIG. 3 is a perspective view illustrating an image passing part of the direct indirect ophthalmoscope of FIG. 2A. The image passing part 130 is received inside the first body part 110 of the indirect ophthalmoscope 100 shown in FIGS. 2A and 2B. In FIG. 3, an illustration of the accommodation structure of the image passing part 130 is omitted, and only the image passing part 130 accommodated in the first body part 110 is illustrated, and the arrangement structure shown in FIG. 3 is illustrated. It may be stored in the first body portion 110.

3 and 4, the image passing part 130 may include a first prism 131, a

second prism

132 and 133,

reflector fixing parts

134 and 135,

reflectors

136 and 137, and a second prism 131. Two prism fixing parts 138 and a light collecting part 139.

In this case, the second prism includes a pair of left second prism 132 and a right second prism 133, and the reflector fixing part also includes a pair of left reflector fixing part 134 and right reflector fixing part 135. And a reflector also includes a pair of left reflector 136 and right reflector 137.

In this case, the first prism 131 may be an isosceles triangular prism having the same inclined plane, and the left and right

second prisms

132 and 133 may each be a schmidt prism. The Schmitt prism is an upright prism using a roof-like reflective surface, and is a prism designed so that the direction of the emitted light beam coincides with the direction of the incident light beam.

The image of the fundus 11 of the examinee is first incident through the light collecting unit 139, and the image is inverted and provided to the first prism 131. The inverted image reflected by the first prism 131 is incident to the left and right

second prisms

132 and 133, and the left and right

second prisms

132 and 133 are inverted again, respectively. Provided to the left and

right reflectors

136 and 137. Thereafter, the image reflected by the left and

right reflectors

136 and 137 is provided to the left and

right eyeballs

15 and 16 of the optometrist.

Thus, the optometrist may oppose the fundus image of the subject provided through the left and

right optometrists

113 and 114.

In the present embodiment, since the image inverted by the condenser 139 is provided inverted again in the left and right

second prisms

132 and 133 composed of the Schmitt prism, the optometrist finally inverts the top, bottom, left, and right sides. You will be provided with an upright image.

Meanwhile, in the present embodiment, as shown by the solid arrows in FIG. 4, only the fundus image of the examinee is the light converging unit 139, the first prism 131, the

second prism

132 and 133, and the reflector. Passed through (136, 137) is provided to the optometrist through the left and right optometry (113, 114).

On the other hand, as shown by the dotted arrow of Figure 4, the outer eye of the subject does not pass through the first prism 131 and the

second prism

132, 133, the left through the reflector (136, 137) And the left and

right eyeballs

15, 16 of the optometrist located in the

right eyepieces

113, 114. That is, the optometrist may directly examine the external eye part of the subject through the left reflector 136 while fixing the left eye 15 to the left eye part 113, and likewise to the right eye part 114 to the right eye ( 16, the external eye of the subject can be directly and directly examined at the same time through the right reflector 137. Thus, stereoscopic vision is possible.

Detailed description thereof will be described with reference to FIGS. 5A and 5B.

5A and 5B, each of the left and

right reflectors

136 and 137 includes a reflector 151 formed at a center portion and a transmission portion 150 formed at a peripheral portion except for a portion where the reflector 151 is formed. do.

In this case, the reflector 151 reflects and provides an incident image as shown by a solid line in FIG. 5B as a reflector. At this time, the reflected angle is adjustable, for example, may be a right angle. That is, the reflector 151 emits the incident image by reflecting it vertically.

Furthermore, since the left and

right reflectors

136 and 137 are arranged at predetermined angles, for example, 45 degrees, as shown in FIG. 4, the reflecting unit 151 is formed in an elliptical shape and finally provided. The fundus image can be formed into a round shape.

On the other hand, the transmission unit 150, as shown by the dotted line in Figure 5b, passes the incident image as it is. Thus, the image incident through the transmission unit 150 is passed through as it is without distortion, such as refraction or reflection.

As such, the left and

right reflectors

136 and 137 reflect and provide an image incident to the center portion at a predetermined angle, while providing an image incident to the peripheral portion as it is.

Therefore, as shown in FIG. 4, the subject fundus image incident on the center of the left and

right reflectors

136 and 137 is reflected by the reflector 151 and provided to the optometrist. On the other hand, the optometrist may directly observe the subject's outer eye through the transmission part 150 of the left and

right reflectors

136 and 137.

Thus, the optometrist can see the external eye of the eye to be observed through the transmission unit 150, and find the position of the subject's fundus, that is, the position of the pupil, and after the optometrist finds the position of the pupil of the subject, The eyepiece of the subject reflected through the reflector 151 may be optometrist or performed.

In addition, since the external eye part of the examinee is not refracted by the first and second prisms, but is directly provided to the optometrist through the reflecting mirror, the optometrist observes the external eye part where the positions of the subject's pupils are not changed by changing the position of the subject's pupils. It can be discriminated more easily. Thereafter, the optometrist may similarly examine the fundus image provided with the same positions of the top, bottom, left and right. Thus, the convenience of the optometrist's optometry and procedure can be improved, and time can be saved.

The direct indirect ophthalmoscope according to the present invention has industrial applicability that can be used as an ophthalmoscope for observing and performing a patient's fundus.

Claims

A first body part including an eye part in which an eye of a subject is located, and an eye part in which an eye part of an optometrist is located; And

Directly indirectly including an image passing part disposed in the first body portion to transmit the fundus image of the subject to the optometrist, wherein the fundus image is refracted and reflected and the external eye portion image is directly transmitted. Ophthalmoscope.
The indirect ophthalmoscope of claim 1, wherein the fundus image passing through the image passing part has the same positions of up, down, left and right.
The method of claim 2, wherein the image passing unit,

A condenser condensing the fundus image;

A first prism that refracts the fundus image passing through the condenser;

A second prism for refracting the refraction image passing through the first prism; And

And a reflector reflecting the refraction image passing through the second prism.
4. The indirect ophthalmoscope of claim 3, wherein the second prism comprises a pair of left and right second prisms to provide a refractive image passing through the first prism to the reflector.
5. The direct indirect of claim 4, wherein the reflector includes a pair of left and right reflectors to respectively provide left and right eyes with a refraction image passing through the left and right second prisms. Ophthalmoscope.
6. The indirect ophthalmoscope of claim 5, wherein the first prism is an isosceles triangular prism and the second prism is a schmidt prism.
The method of claim 3, wherein the reflector,

A reflector reflecting the refraction image passing through the second prism; And

The indirect ophthalmoscope of claim 1, further comprising a transmission portion through which the external eye portion image of the subject passes directly.
The method of claim 7, wherein the first body portion,

A window disposed at a position corresponding to the first prism; And

Direct indirect ophthalmoscope, characterized in that it comprises left and right subjects arranged on both sides of the window.
The indirect eyeglass of claim 1, further comprising a second body part fixed to an upper portion of the first body part and supporting a forehead and a head of an optometrist.