Результаты исследования корреспонденции сетчаток у пациентов с содружественным косоглазием при разных способах разделения полей зрения

Abstract

Purpose. A comparative analysis of results in the study for a correspondence of retinas obtained using mechanical, anaglyph and raster conditions of separation of visual fields, taking into account the objective and subjective angles of strabismus. Material and methods. There were in the study follow-up 240 patients with concomitant strabismus aged 6 to 17 (mean 10.8±0.24) years: with convergent strabismus – 190 patients, with divergent strabismus – 50 patients. All patients underwent a standard ophthalmological examination. In the complex of additional orthoptic examination we applied: determination of deviation value and study of retinal correspondence using the synoptophore by two methods: measurement of deviation value by means of prisms, study of retinal correspondence by means of classical (with raster separation of visual fields) Bagolini test and modified (with anaglyph separation of visual fields) Bagolini test. The deviation value using the synoptophore was determined in two ways: 1) using binocular conditions (both test objects are initially highlighted); 2) using monocular alternation. To determine the value of deviation in conditions as close as possible to the natural cover-uncover test and alternating cover-test with prisms was used. Results. It was found that the value of deviation measured on the synoptophore by the first method was comparable to the value of deviation determined using a cover-uncover test (t=1.74; p=0.083). The deviation measured on the synoptophore by the second method was comparable to the deviation measured using the alternating cover test (t=0.89; p=0.37), exceeding the deviation value on the synoptophore by the first method and with the cover-uncover test by an average of 4.2±0.03°. In a comparative analysis of the results of the retinal correspondence study using different methods separately under the objective and subjective angle of strabismus, it was detected that the results of the study are comparable in most patients, and the difference observed in other cases reflects the influence of mechanical, anaglyphic or raster conditions for separating the visual fields. Conclusions. The results in the measurement of the strabismus angle obtained in the study using the synoptophore with binocular observation conditions (both test objects are initially highlighted) and using a coveruncover test with prisms can be comparable and characterize the value of only tropia without phoria. The results in the measurement of the strabismus angle obtained in the study on synoptophore using the monocular alternation and using alternating cover-test with prisms, can also be comparable and characterize in both cases the total value of the deviation of the eye, including both tropia and phoria. The results of the study of retinal correspondence using mechanical, anaglyph or raster conditions for a separation of visual fields in most patients are comparable, but if it is a subject to the same principles of projecting images to the central and peripheral areas of the retina.