Abnormalities of cornea, lens and retina. Survey findings.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001110:Arctic Regions; D002170:Canada; D002386:Cataract / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D003315:Cornea; D005128:Eye Diseases / Q000453:epidemiology / Q000473:pathology; D006801:Humans; D007198:Indians, North American; D007223:Infant; D007231:Infant, Newborn; D004930:Inuit; D007908:Lens, Crystalline; D008875:Middle Aged; D012164:Retinal Diseases / Q000453:epidemiology*; D014785:Vision, Ocular; D014792:Visual Acuity; D044465:White People