Avoidable visual disability in young children.
D000293:Adolescent; D002648:Child; D002662:Child Health Services; D002675:Child, Preschool; D004739:England; D006301:Health Services Needs and Demand; D006801:Humans; D007223:Infant; D012017:Referral and Consultation; D014786:Vision Disorders / Q000517:prevention & control*