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E Liebhardt

Publications and source records attributed to E Liebhardt.

At least 37 records · Page 2Linked to original sources
PubMed1986

Effects of ethyl alcohol on the electrooculogram and color vision.

Color vision tests and electrooculography (EOG) were performed in 6 male and 2 female healthy young trichromatic volunteers between 60 and 130 min after finishing consumption of ethyl alcohol leading to blood levels of approximately 0.07% to 0.16%. The average number of errors in the desaturated Panel D-15 arrangement test rose from 0.86 to 2.0; the average error score in the Farnsworth-Munsell 100-Hue test rose from 26 to 79. The axis of errors in both tests was clearly tritanopic and tetartanopic, pointing to a specific effect of ethyl alcohol on the function of blue-sensitive cones and/or their interaction with longer wavelength-sensitive cones. Ethyl alcohol decreased the size of the light-peak, apparently in a dose-dependent fashion, in each of the 16 eyes by values between 3% and 79%. The effect of alcohol on the EOG light peak was stronger between 30 and 95 min (23% decrease in average) than between 95 and 130 min (14% decrease) after the finish of alcohol administration.

Color Perception↗
PubMed1985

[Perceptual disorders of the peripheral visual field caused by alcohol. Studies with the automatic Octopus perimeter].

The present paper reports on examinations of temporal visual field perimetry with the Octopus computer-controlled automatic perimeter (Program 51). Nine subjects were tested under normal conditions and after consumption of alcohol. The Octopus represents a static examination method employing the grid perimetry principle. Under the influence of alcohol 7 subjects with blood alcohol concentrations of over 1 0/00 had visual fields which were concentrically restricted to various degrees, with relative scotomata centrally to the concentric restriction. In paired comparisons, reductions in sensitivity to light were found which were statistically highly significant. Previous investigations, conducted exclusively with kinetic perimeters, were unable to demonstrate the subjectively perceived concentric restriction of the visual field ("tunnel vision") following consumption of alcohol.

Adult↗