RU2271794C2 - Eye trainer - Google Patents

Abstract

FIELD: medicine; medical equipment; ophthalmology.

SUBSTANCE: eye trainer has to be glasses, which have two non-transparent perforated plates with through round-shaped holes. Plates are inserted into frame of glasses. Axes of through holes are disposed in parallel to each other and in perpendicular to outer surface of plates. Distance l between centers of adjacent holes is equal or shorter than 2,5d. Diameter d of any hole relates to thickness t of plate equals to d= (1,25-1,35)h. Efficiency of recovering training can be improved at treating of vision's malfunction as well as tiredness and problems with vision can be removed during process of industrial activity.

EFFECT: reduced duration of training course for removing accommodation spasm.

3 cl, 6 dwg, 1 tbl, 3 ex

Description

This proposal relates to medicine and medical equipment, in particular to ophthalmology, and can be used to restore vision with nearsightedness, farsightedness, astigmatism and strabismus, as well as for training to normalize visual impairment, recovery during rehabilitation, relieve fatigue and eyestrain , for example, during and after work on computers.

A similar technical result is achieved in practice by using perforation (diffraction) glasses containing two diaphragms, each of which contains through holes.

A technical solution is known, representing an eye trainer made in the form of glasses containing a body with perforated plates with a cutout, in which each of the holes is made in the form of a cylindrical part formed on the front outer surface of the plate connected inside the plate with a conical part, the larger base of which located on the inner surface of the plate, and the angle of taper lies in the range from 15 to 20 degrees. The diameter of the cylindrical hole on the outer side of the plate is from 1.2 to 1.45 mm, the cutout radius is from 26 to 27 mm, and the ratio of the area of the plate equipped with holes to the total area of the plate is in the range from 50 to 70%.

The step between the holes in the same row is 2.5-3.8 mm, and the distance between adjacent rows of holes is 3-4.5 mm (1).

When using this type of eye training equipment, the image obtained on the retina of the eye is not clear enough, and the effectiveness of using them to restore vision, reduce fatigue and exercise training is negligible due to the lack of a verified choice of characteristics of the used perforated plates, namely, the ratio of the parameters of the diameter of the through holes, the thickness of the perforated the plate and the pitch between the holes, which significantly affects the effectiveness of eye training using similar x devices due to misunderstanding of diffraction processes occurring in such optical systems of human eyes on the apparatus.

Known use in the prevention of myopia and hyperopia, including age (presbyopia), anisometropia, glaucoma, cataracts; to recover during the rehabilitation period, as well as to relieve fatigue and eyestrain of eye simulators made in the form of glasses with screens mounted in spectacle frames and having perforations in the form of circles. Screens have round transparent through sections on an opaque background (perforation). Holes with a diameter of 0.5-1.2 mm. form uniformly distributed unit cells with distances between the centers of the holes of 1.5-4.0 mm (2).

The disadvantages of such devices include the need for individual selection for each patient, low protective properties and, in addition, they are difficult to manufacture.

In addition, such devices do not allow you to associate the size and location of transparent areas with refraction of the eye and correct visual impairments.

In addition, the effectiveness of recovery training when using such training glasses is small.

The closest technical solution is the eye trainer, made in the form of glasses containing two inserted into the spectacle frame, opaque perforated plates with through round holes (1.5 mm in diameter) located in a checkerboard pattern with a pitch between them equal to 4.5 mm, while the axis the holes are parallel to each other and normal to the outer surface of the plates (plate thickness is 1.5 mm). Through holes (number 60) are made conical with the base of the cone on the outer surface of the plate and the angle at the apex of the cone 20-25 °. The outer surface of the plates is covered with a reflective layer (3).

A disadvantage of the known device is the insignificant therapeutic effect of such perforation glasses and the low training efficiency when performing eye exercises, since the proposed perforation characteristics (diameter of the through hole and plate thickness) do not provide the conditions for the occurrence of interference and diffraction phenomena when the light flux passes through each through hole an opaque plate, and in combination of a group of holes a diffraction pattern is not created that pre constitutes a system of circles of light and shadow, sometimes color, as a result of the decomposition of "white" light into components. A similar picture is clearly manifested when looking at a bright light source through glasses with perforation.

As a result, during the training, optimal working conditions (due to light-shadow training and the decomposition of light into the spectrum) of the visual apparatus of the patient’s eye are not ensured.

The technical result achieved by the claimed technical solution is to restore visual acuity, increase the effectiveness of rehabilitation training in the treatment of its disorders, during the rehabilitation period, as well as to relieve fatigue and unloading of vision after or in the course of production activities associated with prolonged visual load.

In addition, it consists in reducing the duration of the training course to relieve the spasm of accommodation, which reduces the risk of acquiring a spasm of accommodation of the muscular apparatus of the eye, providing clear vision in the distance.

As shown by the studies conducted by the applicant, for the construction of eye simulators with perforation plates, the following conditions must be met:

- image light-shadow on the retina and preventing the merging of light fluxes into a common light spot;

- decomposition of light into a spectrum;

- at various diameters - a change in the depth of focus;

- lack of requirement for combining the center of the hole and the optical axis of the eye.

When light passes through multiple small holes, a concentration of light flux occurs, which stimulates the retina and helps to create a clear image of individual light spots on the retina. Light passes directly through the central optical zone, without causing pupil constriction and accommodation stress.

After the light passes through the system of holes and the optical system of the eye, light and dark “zones” are formed on the retina, which are located uniformly over the entire area of the retina. This provides a light-shadow parameter. Consequently, due to the correct location of the holes in the mask (plates), such a condition is achieved that the distribution of dark and light "spots" on the retina, in which the wand-cone mechanism starts to work simultaneously, i.e. It is proposed to use diffraction optical elements (DOE) for this in the form of holes in opaque plates, in which two types of receptors work simultaneously. These are nerve cells that are specialized in such a way as to generate electrical signals when light enters them, the task of the rest of the retina and brain is to use these signals to extract biologically useful information. The brain determines the functioning of the muscles of the eye.

Thus, it is possible to act on different muscle groups at the same time. There is a training (physiological massage), due to which there is muscle relaxation and relaxation of vision.

When looking from one object to another, the location of dark and light “spots” is redistributed and the same mechanism acts on other zones in which the rods and cones are located, and therefore on other muscle groups.

Change the focus depth, depending on the size of the hole. When building images of objects at infinity, the ciliary muscle is at rest. From objects located at finite distances from the eye, diverging rays go to it. To refract such rays, the optical power of the emmetropic eye is insufficient, and the rays are focused in the imaginary space behind the retina. To get a clear image on the retina, the rays reaching the eye must be converted from diverging to parallel. There is a contraction of the ciliary muscle, the ciliary ligaments relax, the forces that stretch the lens capsule decrease, and the radius of curvature of the front surface changes, which leads to an increase in optical power and a clear image on the retina. In this case, using the hole, it is also possible to convert diverging rays of light into parallel ones due to the restriction of light rays passing through the hole. This transformation occurs without tension of the ciliary muscle, which makes it possible to relax the muscles of the eyes and relieve fatigue. When light passes through the holes, diffraction occurs. A lens with many holes arranged periodically is a diffraction grating. If the holes are round in shape, the diffraction pattern will look like alternating dark and light rings. When light passes through a diffraction grating, light decomposes into a spectrum. Therefore, three types of cones, responsible for different colors (red, green, blue), work simultaneously.

The intensity of the rings depends on the brightness of the light source, on the diameter of the hole and on the thickness of the plate. Each hole is a secondary light source, therefore, a ratio of the diameter of the hole and the plate thickness is possible, in which the diffraction pattern will have an optimal form. If the diameter of the hole is larger than the diameter of the pupil or commensurate with it, then the depth of focus does not change, therefore, the diameter of the holes should be no more than 2 mm. If the holes are smaller, but they are too close, then the effect is formed as if one large hole.

Holes in a shape different from a circle, such as a triangle, a quadrangle, a hexagon, etc., lead to a redistribution of light and shadow, the wrong position of dark and light "spots", and the diffraction pattern does not look like concentric rings. Since a person has spherical vision, this type of hole is not optimal.

One of the urgent tasks of research and development of diffractive optical elements (DOE) is to study the possibility of their use for training a person’s vision. It is proposed to use DOEs for this in the form of holes in opaque plates (masks). In order for the eye simulators, made in the form of perforation glasses, to be used as rehabilitation glasses, it is necessary to coordinate the diameter of the hole and find the best ways to arrange the holes in the mask.

The calculations used the generally accepted optical scheme of the eye and the characteristics of the reduced eye according to Gulstrand. For the convenience of calculations, the real eye is replaced by a single lens located in the main plane. The retina is located at a fixed distance x from the main plane. Gulstrand's reduced posterior focal length F 'is 22.8 mm. The reduction is carried out by dividing the determined distance by the refractive index of the medium in which the optical system is located. Considering that in the selected geometry, the image will be formed in the region of the central fossa of the macula, where the cones that are most sensitive to light with a wavelength of λ = 550 nm prevail, in further calculations we use this value.

The clear vision zone in which the eye is capable of recognizing images is approximately 22 ° vertically and 30 ° horizontally. It follows that the image on the retina does not go beyond the zone of clear vision of the eye, regardless of the diameter of the hole. The field of view of the eye, limited by the hole, depends on the field of view of the eye itself and the distance from the perforation lens to the eye.

The maximum angle of view that can be obtained with a hole on an opaque contact lens will be approximately 45 or 58 °, depending on the corresponding pupil diameter of 2-4 mm. With dark adaptation, when the pupil diameter is 8 mm, the field of view expands to 130 °. If the hole is brought close to the pupil, which is possible in the case of an artificial lens with a diaphragm, the eye will not feel a change in the field of view.

Image field from one hole.

The image field from one hole does not fill the entire retina, which is associated with the small size of the field of view. The area of the image on the retina C from one hole we call the "spot". According to the construction of the image of the hole on the retina C, shown in figure 1, the diameter of the "spot" D on the retina C is found by the formula (1):

where D is the diameter of the "spot", mm;

d 'is the diameter of the imaginary image of the hole, mm;

x is the distance from the main plane to the retina, equal to 24 mm;

f 'is the rear focal length equal to 22.8 mm

We calculate the diameter of the "spots" for the studied points. The calculation results are shown in table 1.

In order for the glasses to create a clear image on the retina, it is necessary to coordinate the diameter of the hole.

Hexagonal raster of holes.

To answer the question of how to arrange several holes relative to each other on an opaque plate (mask) together, it is necessary to analyze the image field. The image field from several holes is the sum of the image fields (“spots”) from each of the holes. Consider the path of the rays through two holes in the lens (figure 2).

A light beam passes through each of the holes of the perforation lens, creating a “spot” on the retina. The image field consists of these two “spots”. The distance between the centers of the "spots" can be found by plotting the axial rays, light beams, as shown in Fig.3. We introduce the following notation:

K is the distance between the centers of the holes,

S is the distance between the centers of the "spots".

We write the proportion that follows from the similarity of triangles:

The distance between the centers of the "spots" is determined by the formula (2):

We calculate the distances between the centers of the "spots" for the studied points.

The calculation results are shown in table 1:

The distance S between the centers of the “spots” depends on the ratio of the distance between the centers of the holes, it can be less than or equal to the diameter of the “spots”, in this case the “spots” overlap, which violates the light-shadow requirements, and therefore, the training mechanism is violated. In areas of overlapping of the two “spots”, ghosting will be observed if the eye is not able to accommodate a distance to the subject.

In perforation glasses, the image field on the retina consists of a raster of round “spots”, inside which there is an image, in the intervals between the “spots” there is no image. The “spots” raster has the same appearance as the raster of the hole in the mask. The most successful case is when light “spots” occupy an area slightly larger than dark “spots”. Since geometrical calculations do not take into account the diffraction phenomenon from each hole, which increases the diameter of the "spots", then in some perforation glasses, the "spots" merge. In most cases, the holes of the perforation glasses have diameters comparable to the distances between the holes, which also leads to the failure of the light-shadow parameter.

Phenomenon diffraction phenomenon

As a measure of the resolution of the eye and image quality on the retina, it is convenient to use the diameter r of the caustic in the image of the star, which characterizes the width of the scattering function of the point by the eye. The diameter of the caustic r of an asymmetric optical system with a circular diaphragm of diameter d (hole diameter) is (3):

The image of the distant point is not formed in the focal plane, but in planes located out of focus at a distance x from it, there is a large light spot of Fig.3.

As can be seen from table 1, too large cylindrical holes, including those turning into a cone, merge into a common light spot on the retina. Holes located on a convex (from the eye) plate, depending on the radius of curvature, collect luminous fluxes from the holes into the bundle on the cornea of the eye, the retina before or behind the retina, and in any case create a common light spot. The holes are not round, for example triangular, quadrangular, etc., lead to a violation of the sphericity of the diffraction pattern and do not create concentric color or shadow-light rings, which is unnatural for spherical binocular vision.

The smaller the retina field recognized by the image of one hole, the less likely it is to overlap one hole with another, i.e. less possibility of merging adjacent light spots into one light spot. Glasses 1 and 4 correspond to these criteria, and glasses 5 have an optimal spot size, but because of too much distance from each other, they also have a large "shadow" zone, which can lead to fatigue due to low light. The remaining options due to the diffraction of the hole system, which was not taken into account in the calculation, lead to the combination of the beam into one light spot (see Fig. 3).

Perforation lenses can increase the circles of light scattering (spherical and chromatic aberrations) that occur on the retina when observing objects, especially when they are located outside the accommodation area. Aberrations are the main stimulus for the development of the accommodation reflex. Lenses create conditions on the retina for 0 chromatic aberration and stimulate accommodation. Create an artificial amplification of the optical system of the eye.

Ensuring the positive aforementioned result is achieved by satisfying the necessary conditions for the effective operation of the eye simulator:

- light-shadow training;

- decomposition of light into a spectrum;

The claimed technical result is achieved by the fact that in eye simulators, which are glasses containing two opaque perforated plates inserted into the spectacle frame with through round holes, the axis are parallel to each other and normal to the outer surface of the plates, the ratio of the diameter of each through hole and thickness perforated plate is equal to d = (1.25-1.35) h, where d is the diameter of the through hole of the perforated plate, h is the thickness of the perforated plate, and the distance l between the centers of the neighbor of the holes is l≥2.5d, and the exact coincidence of the center of one of the holes with the optical axis of the eye is not required.

As the results of the studies showed, the working values of the perforation characteristics that meet the requirements of light-shadow training on the retina of the eye and the decomposition of visible light into the spectrum are as follows: The diameter of the through holes is d = 0.9-1.35 mm, with the plate thickness h = 0.7-1 mm and the distance between the holes l = 2.2-4.0 mm The optimal values of perforations: d = 1 mm, 1 = 3 mm and h = 0.8 mm.

In addition, the through holes in the perforated plates are cylindrical.

In addition, the through holes are made in perforated plates in the form of truncated cones, the base facing the outer surface of the plates. The angle of the cone at the apex is 20-25 °.

Comparative analysis with the prototype shows that the claimed device is characterized by the presence of a new set of its essential features, namely, that the ratio of the diameter of each through hole and the thickness of the perforated plate is d = (1.25-1.35) h, and the distance between the centers of neighboring holes equals l≥2.5d,

where: d is the diameter of the hole of the perforated plate, a h is the thickness of the perforated plate, and l is the distance between the centers of adjacent holes;

The essential features of the new totality of the proposed technical solution also include such features as are set forth in the dependent clauses of the proposed claims and characterized by embodiments of the device, namely, the dimensions of the perforations (the diameter of the through holes is d = 0.9-1.35 mm, with the plate thickness h = 0.7- 1 mm and the distance between the holes l = 2.2-4.0 mm) and the shape of the through holes in the perforated plates.

In the study of the distinguishing features of the described device, no similar known solutions were found regarding the proposed correlation of perforation characteristics (through holes), allowing to ensure that the necessary conditions for effective work are observed in the eye simulator:

- light-shadow training;

- decomposition of light into a spectrum;

Thus, the claimed technical solution meets the condition of "NEW".

A comparison of the claimed technical solution not only with the prototype, but also with other technical solutions in the given field of technology (1, 2) shows that the claimed solution does not follow for the specialist explicitly from the prior art determined by the applicant; that it does not reveal signs that distinguish this technical solution from the prototype and does not reveal the effect of the transformations provided for by the essential features of the claimed invention on the achievement of the technical result.

Therefore, the claimed technical solution meets the condition "INVENTIVE LEVEL".

The essence of the claimed technical solution is illustrated by drawings, where:

- figure 1 shows the construction of the image of the hole on the retina;

- figure 2 presents the image field from several holes of the perforation lens as the sum of the image fields from each hole;

- figure 3 shows the phenomenon of diffraction in perforation glasses;

- figure 4 shows a General view of the claimed simulator for the eyes;

- figure 5 presents an embodiment of through holes in the perforated plates of the inventive eye trainer cylindrical;

- figure 6 presents an embodiment of through holes in the perforated plates of the claimed simulator for the eyes in the form of truncated cones, facing their bases to the outer surface of the plates.

The eye trainer is a spectacle containing perforated plates 2 inserted into a spectacle frame 1 and made of opaque material with through holes 3 and opaque jumpers 4. Any optically opaque material, for example, ABC polymer, can be used as the material of perforated plate 2.

The axes of the through holes 3, for example staggered, are parallel to each other and normal to the outer surface 5 of the perforated plate 2, and the distance between the centers of adjacent through holes 3 is l≥2.5d, where l is the distance between the centers of adjacent through holes 3 on the perforated plate.

The ratio of the diameter of each through hole 3 and the thickness of the perforated plate 2 is d = (1.25-1.35) h, where d is the diameter of the through hole 3 of the perforated plate 2, and h is the thickness of the perforated plate 2.

The working values of the perforation characteristics, calculated for the average consumer, having the standard principles of visual impairment (age-related change in vision) and meeting the requirements of light-shadow training on the retina of the eye and the decomposition of visible light into the spectrum, are as follows: the diameter of the through holes is d = 0.9-1.35 mm, with a plate thickness h = 0.7-1 mm and a distance between the holes l = 2.2-4.0 mm.

For children prone to myopia, as well as for older people, earlier than the average period prone to presbyopia, the perforation values can be as follows: the diameter of the through holes can be from 0.6 to 1.0 mm and from 1 to 2 mm, subject to the stated the ratio of d- (1.25-1.35) h.

The perforation characteristics used in the proposed embodiment of the eye trainer are as follows: d = 1 mm, l = 3 mm and h = 0.8 mm. Through holes 3 can be made of a cylindrical shape 6 (as in figure 5).

Through holes 3 can be made in perforated plates 2 in the form of truncated cones 7 with a diameter d of smaller truncation of the cone, the base facing the outer surface of the plates 5. The angle at the top of the cone is 20-25 °, in the considered embodiment 20 ° (Fig.6 )

The proposed simulator for the eyes is used as follows:

Spectacle frame 1 with perforated plates 2 fixed on it with through holes 3 put on instead of glasses and use:

- for restorative training of the eyes of people with normal vision, rehabilitation after intense working conditions of the visual apparatus, for example, working with a computer, working in libraries, regular work with documents and drawings, etc., according to indications and subjective sensations for unloading of vision during intensive visual work, for example, a computer operator or removing visual fatigue immediately after performing visual work, working with a microscope, microassembly, soldering of electronic equipment, etc .;

- for restorative training of the eyes of young people with the first signs of myopia (school), which consists of the following factors: eye fatigue due to overstrain arising from frequent switching of gaze (far to close), eye muscle fatigue, requiring an accommodation spasm, if necessary prophylaxis with periodic use in order to train the performance of visual exercises to enhance their effect in the case of treatment of visual impairment and during rehabilitation procedures;

- for rehabilitation training in presbyopia, when there is a change in the elasticity of the lens of the eye and weakening of the muscles of the eye often leading to a flattening (a change in the direction of flatness) of the shape of the cornea of the eye, which is usually inherent in the elderly and people of visual labor aged 35 to 50 years;

- for preventive eye training, for example, with myopia, farsightedness, astigmatism, etc., as well as in sports related to concentration of attention (shooting, billiards, cards, etc.).

- to reduce the brightness of the light flux during eye fatigue when watching television programs, or working with a computer;

Due to the through holes with the stated ratios of the diameter of the through hole, the plate thickness and the distance between the centers of the holes (d = (1.25-1.35) h and with l≥2.5d images on the retina of the eye:

- represent alternating dark and light "spots", of different colors, which do not overlap and are evenly distributed over the area of the "yellow spot" and throughout the retina;

- when looking from one object to another, the location of dark and light “spots” is redistributed and the same mechanism acts on other areas in which the rods and cones are located, and therefore on other muscle groups;

- the impact of light fluxes of various spectral parameters on the eye element (for example, the cornea).

Thus, the conditions for training light-shadow and the decomposition of light into the spectrum are observed. For better fulfillment of the conditions, the parameters of the through holes 3 in the perforated plates 4 were selected: the working values of the perforation characteristics that meet the requirements of light-shadow training on the retina of the eye and the decomposition of visible light into the spectrum are as follows: the diameter of the through holes is d = 0.9-1.35 mm, with a thickness plates h = 0.7-1 mm and the distance between the holes l = 2.2-4.0 mm.

The perforation characteristics used in the proposed embodiment of the eye trainer are as follows: d = 1 mm, l = 3 mm and h = 0.8 mm.

When working with such glasses - simulators, some dimming is created for the eyes, compared with general illumination and the diameter of the pupil of the eye is 4-6 mm. Optimum results are achieved with the following through hole parameters: d = 1 mm, l = 3 mm and h = 0.8 mm. The duration of one training session is up to 15 minutes. Training should be carried out as often as possible, in any free time. The parameters of the perforated plate (d = 1 mm and h = 0.8 mm) are universal for any person of age, type of occupation and type of work. Parameters (d = 0.9 mm and h = 0.7 mm, and l = 2.2 mm) are effective only for children under 12-14 years of age (school myopia). Parameters (d = 1.35 mm and h = 1.0 mm, and l = 4.0 mm) are effective only for the elderly (presbyopia).

The extreme values of the stated ratio (d, h, l) are associated with the physiological properties of the eye. In children, the pupil diameter can vary from 2 to 8 mm and there is a high quality of the retina, as well as high accommodation ability; for older people, prone or having presbyopia (age-related changes in the eye), the range decreases from 3-4 to 5–6 mm, the quality of the retina and the ability to accommodate are much lower, which complicates the reaction to small hole diameters (up to 1 mm).

Going beyond the limit parameters leads to the need for individual selection of parameters for perforated plates.

Such a need is associated with:

- with small holes (below 0.6 mm) with insufficient retinal illumination and eye fatigue;

- with large openings (more than 1.5 mm) with a decrease in the number and total area of light sections, while such glasses, having one luminous flux, work as an aperture (diaphragm), acting as a spectacle lens (+ 1,5D ÷ + 2, 0D), which is comfortable for an elderly person, but such a system does not provide effective training

Below are examples showing the implementation of the destination using the proposed device:

Example 1: A 55-year-old man felt the need to acquire reading glasses (initial age presbyopia). As a result of regular use of the simulator for the eyes for five years (in any free time for 5 ÷ 10 minutes. I managed to restore visual function and does not use reading glasses.

Example 2: The vision of a 22-year-old girl in the last year of the institute sharply worsened (to ÷ 2.5D). As a result of the training, 3 ÷ 4 times a day for 15 ÷ 20 min using this eye trainer, the objective indicators of the eyes improved to (-0.5 ÷ 0.75D).

Example 3: Children aged 10-12 years after playing on a computer had redness of the eyes, pain, impaired vision (-0.5D ÷ -1.0D), after restoration procedures with an eye trainer, they restored visual performance and visual acuity.

An experimental batch of perforation glasses made on the basis of the claimed invention, Ivanidze VN, who is the general director of CJSC Interoptik, was tested at the Moscow Center for Visual Prevention and Sports Vision at the All-Russian Research Institute of Physical Culture and Sports for a qualitative analysis of their impact on the main visual functions with using the "Tests for checking and training vision" developed at the Military Medical Academy in St. Petersburg (see the Conclusion on the physiological testing of perforation lensless glasses for rel ksatsii of prof. PhD, corresponding member. RAENG.G. Demircholyana on August 13, 2001 N 231).

According to the conclusion, these perforation glasses, although they are not a therapeutic agent, however, can be recommended for psychophysiological unloading in order to have a relaxation effect to reduce visual fatigue and temporarily increase visual acuity and training the visual analyzer (normal, with farsightedness, myopia and astigmatism), and also for observing various fast moving objects.

Therefore, the claimed technical solution meets the condition "INDUSTRIAL APPLICABILITY".

Information sources

1. The certificate of R.F. Utility Model No. 11675, MKI: A 61 B 3/00, 1999

2. US patent No. 4249803, NKI: 351-46. 1979 year

3. Patent R.F. No. 2089102, MKI ⁶ : A 61 B 5/16, A 61 F 9/00, 1996 (prototype).

Claims (4)

1. Eye trainer, which consists of glasses containing two opaque perforated plates inserted into the spectacle frame with through round holes, the axes of which are parallel to each other and normal to the outer surface of the plates, characterized in that the ratio of the diameter of each hole d and the plate thickness h equal to d = (1.25-1.35) h, and the distance l between the centers of adjacent holes is equal to l≥2.5 d. 2. The eye trainer according to claim 1, characterized in that the diameter of the through holes is d = 0.9-1.35 mm, with a plate thickness h = 0.7-1.0 mm and the distance between the centers of adjacent through holes I = 2.2-4.0 mm. 3. The eye trainer according to claim 1, characterized in that the through holes are cylindrical. 4. The eye trainer according to claim 1, characterized in that the through holes are made in perforated plates in the form of truncated cones, the base facing the outer surface of the plates.

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