Defective vision in children.
D001766:Blindness / Q000453:epidemiology; D002386:Cataract / Q000453:epidemiology; D002648:Child; D006233:Persons with Disabilities; D005128:Eye Diseases / Q000453:epidemiology*; D006801:Humans; D009759:Nystagmus, Pathologic / Q000453:epidemiology; D009896:Optic Atrophy / Q000453:epidemiology; D012178:Retinopathy of Prematurity / Q000453:epidemiology; D006113:United Kingdom; D014786:Vision Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology