[A study on poor sighted patients in Ehime prefecture found in a 1955-travelling clinic].
D000293:Adolescent; D000328:Adult; D000368:Aged; D002387:Cataract Extraction; D002648:Child; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D014786:Vision Disorders / Q000175:diagnosis / Q000453:epidemiology*