Incidence of colour-blindness among the marine fishermen of Puri.
D000293:Adolescent; D000328:Adult; D000368:Aged; D003117:Color Vision Defects / Q000453:epidemiology / Q000235:genetics*; D005006:Ethnicity; D006801:Humans; D007194:India / Q000208:ethnology; D008297:Male; D008393:Marriage; D008875:Middle Aged; D009790:Occupations; D012641:Selection, Genetic