Registration and notification.
D000293:Adolescent; D001766:Blindness; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012042:Registries; D006113:United Kingdom; D014786:Vision Disorders / Q000453:epidemiology