Saratov JOURNAL of Medical and Scientific Research

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

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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