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(1)

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Abstract #10352 Published in IGR 6-1

Diffuse luminance flicker increases blood flow in major retinal arteries and veins

Garhöfer G; Zawinka C; Resch H; Huemer KH; Dorner GT; Schmetterer L
Vision Research 2004; 44: 833-838

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It has been shown that diffuse luminance flicker increases optic nerve head blood flow. The current study was performed to quantify changes in retinal blood flow during flicker stimulation. In a group of 11 healthy volunteers, red blood cell velocity and retinal vessel diameters were assessed with bi-directional laser Doppler velocimetry and the Zeiss retinal vessel analyzer before, during and after stimulation with diffuse luminance flicker. Retinal blood flow was calculated for each condition. Flicker stimulation increased retinal blood flow by +59 ± 20% (p < 0.01) in arteries and by +53 ± 25% (p < 0.01) in retinal veins. These results demonstrate that diffuse luminance flicker increases retinal blood flow in the human retina.

Dr. L. Schmetterer, Department of Clinical Pharmacology, Vienna General Hospital, University of Vienna, Wahringer Gurtel 18-20, Vienna A-1090, Austria

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Classification:

6.11 Bloodflow measurements (Part of: 6 Clinical examination methods)

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