title: ABC of ophthalmology. Refractive anomalies.
mesh_terms: D000065:Accommodation, Ocular; D000293:Adolescent; D000328:Adult; D002648:Child; D003261:Contact Lenses; D005123:Eye / Q000254:growth & development; D005139:Eyeglasses; D006801:Humans; D008875:Middle Aged; D012030:Refractive Errors / Q000628:therapy