SU1560079A1 - Method of early diagnosis of retrobulbar neuritis - Google Patents

Abstract

The invention relates to ophthalmology and can be used for the early diagnosis of retrobulbar neuritis. The purpose of the invention is to improve the accuracy of the method. For this, a patient is presented with a disk with a black background on one half of it and black and white arcs on the other. The disk is rotated at a speed of 10-12 rev / s until the appearance of the subjective perception of color bands. When perception, instead of green, blue and blue, respectively, brown, gray and black, retrobulbar neuritis is diagnosed.

Description

The invention relates to medicine, in particular to ophthalmology, and can be used for the early diagnosis of inflammatory diseases of the optic nerve.

The aim of the invention is to improve the accuracy of the method of early detection of inflammatory diseases of the optic nerve of retrobulbar localization.

The method is carried out by investigating the Benham-Fechner phenomenon.

Its essence lies in the fact that with the rotation of black and white objects, people with normal visual functions have a sensation of color illusions. To reproduce the Phenomenon, a disk is used, half of which is black, on the second half of the disk, which is white, black arcs 10 mm wide are placed with a black phase angle of 135 ° and white 225th. When rotating the disk at a speed of 10-12 rev / s before

eyes pulsate larger but hairs painted in rachlich and uecii tones.

The study was conducted in a darkened room from a distance of 100 cm with uniform illumination of the rotating disk. In the study of the Benham-Fechner phenomenon, a qualitative change in illusions has been established. In the presence of retrobulbar neuritis, the blue color appearing in healthy individuals was treated as dark blue or gray, blue as black, instead of green there was the illusion of brown. The perception of red and orange did not change, but they seemed dimmer.

Example 1. Sick K., 28 years old. Diagnosis: post-traumatic macula r-on dystrophy of the left eye. Three months ago there was a dull injury to the left eye, after which the vision dropped sharply. It was treated permanently.

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During the examination: the right eye - visual acuity 1,2, emmetropi, anterior part, refractive media and the fundus of the eye - a variant of the norm. Left eye: visual acuity of 0.25 not a correspondent. front section not changed, floating murmur in vitreous body. Ophthalmoscopy: The disc border is somewhat stewed, the caliber-vein is enlarged to 140 microns. In the macular area, a scar about 180 µm wide, about 5000 µm long, surrounded by pigment clumps. In the visual field, the central relative system of irregular shape is within 6-8. In the study of the phenomenon of Benham - Fechner, she noted in her left eye the same range of color illusions that a healthy eye observed, but their brightness was lower.

Example 2. Sick M., 18 le. Sent for consultation to work on the initial form of tapethorethinal dystrophy of the retina in the macular region in both eyes. The patient complains of a lower vision. During the examination: visual acuity on the eyes of the eyes of 0.6-0.7, emmetropi. Front compartment, refractive media and eye and its bottom in the normal range. The optic nerve head is normal, arteriovenous dissociation is noted due to an increase in the caliber of veins to 140 µm, the macular area is without pathology, but its reflexes are somewhat weakened. In the field of view, a relative relation is noted on the scotoma within 4-6.

In the study of the Benham-Fechner Phenomenon, the blue pulsating circle appeared gray, blue — black, green — brown. Based

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research on the Benham-Fechner phenomenon, the diagnosis has been changed.

The final diagnosis: the initial stage of retrobulbar optic neuritis. With further clinical observation of this patient, she developed retrobulbar neuritis with a significant decline in visual function.

Thus, clinical observations have shown that changing the quality of color illusions, distorting their appearance of an illusion of dark blue instead of blue (or even gray), black instead of blue and brown instead of green is a diagnostic test for the initial stage of retrobulbar optic neuritis, to carry out differential diagnostics of diseases of the optic nerve with diseases of the retina, in particular with maculitis. In addition, the advantage of the proposed research method is its simplicity.

Claims (1)

The invention is a method for early diagnosis, retrobulbar neuritis by presenting test objects that differ from and with the fact that, in order to improve the accuracy of the method, a disc with a black background in one half and black and white arcs are presented. half, rotate at a speed of 10-12 revolutions per second until the subjective perception of color bands appears and when perceived instead of green, blue and blue, respectively, brown, gray and black, retrobulbar neuritis is diagnosed.