[Color blindness: in high school students less often than in elementary school pupils].
D000293:Adolescent; D002648:Child; D003117:Color Vision Defects / Q000453:epidemiology*; D005860:Germany, West; D006801:Humans; D012574:Schools; D013334:Students
Farbenblindheit: bei Gymnasiasten seltener als bei Volksschülern