[Epidemiological study of eye diseases among small children].
D001724:Birth Weight; D002675:Child, Preschool; D005128:Eye Diseases / Q000453:epidemiology*; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000150:complications; D007564:Japan; D008403:Mass Screening