Screening for color blindness using optokinetic nystagmus

Cavanagh, P. and Anstis, S. and Mather, G. (1984) Screening for color blindness using optokinetic nystagmus. Investigative Ophthalmology and Visual Science, 25 (4). pp. 463-466. ISSN 0146-0404

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Abstract

Red/green luminosity ratios wee determined by a new method. A special colored grating of red and green bars appeared to move to the left (or right) when the red bars were darker (or lighter) than the green bars. Optokinetic nystagmus eye movements (OKN) elicited by this stimulus could be measured photoelectrically, or by directly watching the subject's eyes. When the red/green ratio passed through equiluminance, the direction of apparent movement (AM) and of OKN reversed in direction. Protans needed more red than normals to reach equiluminance, and deutans needed more green. This OKN method might be applied to nonverbal subjects such as infants and animals.

Keywords:central nervous system, color vision defect, color vision test, deuteranopia, diagnosis, eye movement, human, human experiment, methodology, optokinetic nystagmus, protanopia, test, visual system, Color Vision Defects, Eye Movements, Nystagmus, Physiologic, Support, Non-U.S. Gov't
Subjects:B Subjects allied to Medicine > B140 Neuroscience
C Biological Sciences > C830 Experimental Psychology
Divisions:College of Social Science > School of Psychology
ID Code:16151
Deposited On:04 Dec 2014 13:52

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