title: Optic nerve hypoplasia: a changing perspective.
mesh_terms: D001369:Axons / Q000648:ultrastructure; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D009410:Nerve Degeneration; D009900:Optic Nerve / Q000002:abnormalities* / Q000196:embryology / Q000648:ultrastructure