RU2452437C2 - Device for treating amblyopia - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment. Device for treatment of amblyopia by means of pattern- and colour-stimulation contains tube, covered with mirror plates, light-transparent multi-coloured elements of arbitrary shape and light source. Two replaceable units with multi-coloured elements with particle size 3-4 mm with vision acuity ≥0.1 and 6-7 mm with vision acuity <0.1 are used. As light source multi-colour LED is used.

EFFECT: application of claimed device will make it possible to increase efficiency of stimulation and will make it possible to carry out treatment of patients with different vision acuity.

2 dwg

Description

The invention relates to medical equipment, namely to pleoptic devices for the treatment of functional visual disorders associated with amblyopia of varying degrees.

A device for the treatment of amblyopia (Belarusian patent VU No. 6409, A61F 9/00 from 2001.10.22, publ. 2004.09.30) by color-impulse structured maculostimulation of the amblyopic eye is known. The device comprises a pulsed radiation generator of the visible part of the spectrum, an emitter, an LED, a direct current power source. The LED operates in the range of 550-660 nm with an intensity of 0.9-1.5 stilb. The device can be used to treat children from 2 years of age, which is a disadvantage.

The closest in technical essence is a device for the treatment of amblyopia (China Patent No. 1054377 from 1991/09/11 - prototype). According to the patent, the device is a kaleidoscope consisting of a tube with closed mirror plates, multi-colored elements of arbitrary shape and an LED emitting red with an adjustable intensity. The disadvantages of the prototype is the ability to stimulate only cones sensitive to the red part of the visible spectrum, which will inevitably lead to insufficient treatment of amblyopia, where simultaneous stimulation of red, blue, and green sensitive cones is required, as well as the impossibility of its differentiated use for patients with different visual acuity.

The objective of the invention is to develop a universal effective kaleidoscopic device that can be used to treat functional visual disorders associated with amblyopia of varying degrees in young children.

The essence of the inventive kaleidoscopic device is that in a kaleidoscope containing a tube, closed at one end with a lid with a hole for observation, and with the other frosted glass, three mirror plates located inside the tube along its length and fastened together at an angle of 60 ° to each other to a friend, use two replaceable blocks with elements of arbitrary shape, and with a visual acuity of ≥0.1, the size of the elements is 3-4 mm, and with a visual acuity of <0.1, the size of the elements is 6-7 mm. A multicolor LED device is also used that generates time-varying light pulses of different wavelengths (different colors).

Figures 1 and 2 show an example of the structural implementation of the inventive kaleidoscopic device.

The kaleidoscope contains a tube (1), inside of which three mirror plates (2) are located along the length, fastened at a angle of 60 ° to each other. At one end, the tube is covered with frosted glass (5), and at the other end with a lid (3) with a round hole (4) for observation. A replaceable block of two transparent glasses (6), inside of which there are multi-colored translucent elements of arbitrary shape, is installed between the mirror plates and frosted glass. A LED device is placed in the space between the block of two transparent glasses and the frosted glass, which consists of a multi-color LED (8), a battery (9) and a switch (7).

The technical result obtained by using the proposed device:

- simultaneous effects on retino-cortical elements using pattern and color stimulation;

- increasing the effectiveness of stimulation due to the synergistic effect of the effects;

- the possibility of treating patients of different ages (starting from 6 months) with different visual acuity with different forms of amblyopia, regardless of the nature of fixation;

- the LED used provides the optimal time for presentation to the patient of light pulses of various wavelengths;

- the device is safe to use, can be used both in a medical institution and at home.

The device is used as follows. Visual acuity is determined in a patient. When the value of visual acuity is ≥0.1, an interchangeable unit with multi-colored elements of 3-4 mm in size is used; when the value of visual acuity <0.1, use a removable unit with multi-colored elements of 6-7 mm in size. One eye is closed with an occluder, and with the second eye the patient observes a change of images in the device for 15 minutes. When the tube rotates horizontally, the multi-colored elements roll over, forming colored figures in the triangular central portion of the field of view, bounded by three mirrors. The reflection of these figures in the mirror plates creates colored patterns with three-beam symmetry, repeated 3 more times along the edges of the field of view. At the same time, when the power is turned on, a projection onto the triangular central portion of the field of view of time-varying light pulses of different colors (different wavelengths) occurs. The course of treatment is 20 days, daily for 1-2 procedures for 15 minutes. Treatment can be done at a hospital or at home.

The use of a device for the treatment of amblyopia is illustrated by the following examples.

1. Patient S., born in 2003, a / c 218516. Diagnosis: friendly divergent monolateral strabismus; moderate hyperopia, complex hyperopic astigmatism, partial optic atrophy, relative amblyopia OD. Vis OD = 0.08-0.1 n / a, Vis OS = 1.0.

Within 15 minutes, OD was stimulated using the proposed device with a block containing elements with a side of 6 mm. A study of visual evoked potentials on the flash and on the pattern before and after the procedure. After stimulation, an increase in the amplitude of P ₁₀₀ on a flash of about 10 μV (from 26.4 to 36.7 μV) was revealed, on the reversible pattern, about 2.8 μV (from 8.9 to 12.7 μV).

2. Patient K., born 2004, a / c No. 227493. Diagnosis: anisometropia; hyperopia of moderate degree OD, amblyopia of moderate degree OD. Vis OD = 0.1 sp + 4.5 ^D = 0.2, Vis OS = 1.0. Within 15 minutes, OD was stimulated using the proposed device with a block containing elements with a side of 6 mm. Visual evoked potentials (VIZ) were studied before and after the procedure. During stimulation, a significant increase in the amplitude of P ₁₀₀ per reversible pattern by 8 μV (from 8.9 μV to 17.2 μV) is distinguishable.

Claims (1)

A device for the treatment of amblyopia using pattern and color stimulation, containing a tube closed by mirror plates, translucent multi-colored elements of arbitrary shape and a light source, characterized in that two interchangeable blocks with multi-colored elements with particle sizes of 3-4 mm are used with visual acuity ≥0 , 1 and 6-7 mm with visual acuity <0.1, and a multicolor LED is used as a light source.

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