title: Optic nerve hypoplasia.
abstract: Optic nerve hypoplasia is rarely met in otherwise normal eyes. Three unilateral cases of patients with small optic disks, reduced visual acuity, and convergent squint on the affected eye are presented. The anomaly is probably caused by failure of development of the ganglion cell layer of the retina causing a small optic nerve head with normal central vessels. Inheritance or induction by drugs could not be found in our cases.
mesh_terms: D002648:Child; D005260:Female; D005654:Fundus Oculi; D006801:Humans; D008297:Male; D009900:Optic Nerve / Q000002:abnormalities*; D012030:Refractive Errors / Q000150:complications; D013285:Strabismus / Q000150:complications*; D014792:Visual Acuity