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Effect of low alcohol consumption on visual evoked potential, visual field and visual contrast sensitivity

Effect of low alcohol consumption on visual evoked potential, visual field and visual contrast sensitivity

Acta Ophthalmologica Scandinavica 77(1): 23-26

Purpose: We studied changes in the vision of 16 people after consumption of a small quantity of alcohol, at a blood alcohol level (BAL) of 0.57 g/kg. Methods: We studied visual contrast sensitivity (VCS) using Vistech VCTS 6500, visual evoked potential (VEP) by checked pattern stimulations and the peripheral visual field (PVF) with a perimetric automatic Humphrey. We first carried out the tests on sober people and then on individuals with a BAL of 0.57 g/kg. Results: Alcohol consumption caused no significant difference in performance for these 3 tests. However, at a BAL of 0.57 g/kg there was a decrease in cerebral function, as shown by an increase in the number of mistakes made in the Wisconsin Card Sorting Test. Conclusion: These results suggest that for a low blood alcohol level, visual performance is less affected by the visual changes than by alteration in brain functions.

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Accession: 010528228

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PMID: 10071142

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