Saratov JOURNAL of Medical and Scientific Research

blindness

Flash visual evoked potentials and psychophysi-ological indicators of the visual system with visual acuity "hand motion"

Year: 2020, volume 16 Issue: №2 Pages: 647-652
Heading: Ophtalmology Article type: Original article
Authors: Sirotkina I.V., Gareev Е.М., Mikhaylova G.M., Shakirova E.R., Koshelev D.I.
Organization: Russian Eye and Plastic Surgery Center
Summary:

The purpose of the study is to investigate the distribution of the amplitude and time parameters of visually evoked potentials and their relationship with the psychophysiological indicators of the visual analyzer in visual acuity "hand motion". Material and Methods. Data from 85 eyes were analyzed: 36 eyes with predominant impairment of retinal functions, 36 eyes with predominant impairment of the optic nerve, and 13 eyes with the predominant impairment of the optical media of the eye. The LED flash response was registered on the Neuro-MVP-4 device. The severity of detection was assessed using the CAMEL software. The threshold of electrical sensitivity was measured on the ESOM-Comet device. Results. All the parameters under study had a significant variation. The latency of flash VEP components had statistically significantly higher values in the group with predominant dysfunction of the optic nerve (p<0.01). The amplitude of the VEP was significantly higher in the group with the impairment of the transparency of optical media of the eye (p<0.01). There were no close correlations between the amplitude-time parameters of the flash VEP and the psychophysiological parameters of the visual system (т<0.20, p>0.05). Conclusion. The methods under study can be used with different efficiency in monitoring the functional state of the visual analyzer. The obtained data indicate the need for comprehensive assessment of visual functions in the non-visible area for effective monitoring of residual visual functions.

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Epidemiological characteristics of rhegmatogenous retinal detachment in the Central Black Earth region

Summary:

Aim: to estimate the frequency of rhegmatogenous retinal detachment among the population of the Central Black Earth region. Material and Methods. A retrospective study on the study of patients with myopia, who turned to the rhegmatogenous retinal detachment (RRD) in "S. Fedorov Eye Microsurgery Federal State Institution" in the period from 2006 to 2017 The epidemiological characteristics of patients who have applied to the RRF from five regions of the Central Black Earth Region (Belgorod, Voronezh, Kursk, Lipetsk, Tambov) are presented. Results. There is an annual increase in the number of patients with myopia complicated by RRD. The highest number of cases of myopia complicated by RRD was recorded in the age group of 50-59 years and 60 years and older, the smallest — in the age group 0-19 years. The female population suffers from a myopia complicated by the RRD equally with the male, but in the age groups 20-29 years, 30-39 years, men suffer more often, in the age groups 50-59 years, 60 years and older, women suffer more often. Among the patients from the Voronezh region, the largest number of cases of RRD was registered in the age group of 50-59 years, among patients from Tambov, Lipetsk and Kursk regions — in the age category of 60 years and older, from Belgorod region — in the age category of 30-39 years. The majority is represented by pensioners (60.3%), working people — 20.8%, disabled people — 15.8%, others 3.1%. Conclusion. Among the population of the regions of the Central Black Earth region, there is an annual increase in the number of patients with RRD, while the number of such patients will only increase, which indicates the need to improve the organization of eye care to the public.

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