The incidence of colour-blindness among the Tibetans.
D000293:Adolescent; D000328:Adult; D002648:Child; D003119:Color Perception Tests; D003117:Color Vision Defects / Q000453:epidemiology*; D005260:Female; D005787:Gene Frequency; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged