On a possible explanation of the unusually high rates of colour vision defects in some west of Scotland primary schools.
The rate of Colour Vision Defect in some West of Scotland Primary Schools can be nearly four times higher than the normal rate for European whites. Population isolates in Ireland at the time of the troubles when immigration to Scotland was occurring could be a possible explanation.
D002648:Child; D003117:Color Vision Defects / Q000453:epidemiology*; D004641:Emigration and Immigration; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D007494:Ireland / Q000208:ethnology; D008297:Male; D012606:Scotland