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Study of the functional statement of the visual analyzer in patients with chronic vertebralbasilar insufficiency

Poster Details

First Author: L.Ramazanova RUSSIA

Co Author(s):    S. Makkayeva                    

Abstract Details


Objective:to study the functional statement of the visual analyzer in patients with chronic vertebral-basilar insufficiency.


We examined 86 persons with chronic vertebral-basilar vascular insufficiency. Of these women was 58% (50 person), and men - 42% (36 person). The average of examined age was 62,2 ± 8,4 years. The control group consisted of 30 healthy individuals of appropriate age and gender. Astrakhan State Region Clinic, Astrakhan, Russia


Electrophysiological study included: the definition of the electrical sensitivity and the lability of the optic nerve (ON), flicker fusion frequency, electroretinography (ERG), which included general and macular ERG.


All patients had various stages of ocular fundus changes typical for the arterial hypertension, a significant reduction in the flicker fusion frequency compared with the normal results (p<0,05). When an overall significant decrease in ERG amplitude was determined a-and b-waves, macular ERG - amplitude decrease and prolongation of the latency time of a-and bwaves compared with the control group, decreased the amplitude of oscillatory potentials. Indices of the lability and sensitivity of the optic nerve were within normal limits


Application of new electrophysiological diagnostic methods allow to identify and assess the degree of pathological changes in the visual analyzer at an early sub-clinical level of disease in violation of circulation in the vertebral-basilar basin.

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