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April 1969

Vergence and Accommodation: VI. The Influence of Ethanol on the AC/A Ratio

Author Affiliations

Ann Arbor, Mich
From the Department of Ophthalmology, University Hospital, University of Michigan, Ann Arbor.

Arch Ophthalmol. 1969;81(4):518-525. doi:10.1001/archopht.1969.00990010520010

Haploscope measurements of accommodation and accommodative vergence over a range of stimuli to accommodation were carried out on six young adult observers at various levels of alcoholic intoxication. In all cases there was a decrease in response AC/A proportional to the level of blood ethanol. A change in blood ethanol of 0.01 gm/100 cc is, on the average, associated with about a 5% decrease in AC/A. Each subject also demonstrated an increase in tonic convergence which returned to the baseline or overshot before the blood ethanol level returned to zero.

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