[Optic nerve head avulsion: a case report].
Optic nerve head avulsion is a rare condition. It consists in a rupture of the nerve fibers at the level of the lamina cribrosa followed by a retraction of these fibers into the intact optic sheath. We report a case of optic nerve head avulsion following globe contusion. The association of a sudden forced globe rotation, a possible acute proptosis, and a sudden rise in intraocular pressure likely caused the avulsion. The presence of intraocular hemorrhages did not prevent examination of the optic nerve head region, which showed a crater. Initial visual acuity was no light perception. An orbit bone fracture was ruled out after CT examination. The patient was treated with general antibiotics and eyedrops (antibiotic/corticosteroid and atropine). No visual recovery was observed.
Denion
E
E
Centre hospitalier Andrée Rosemon, Cayenne. edenion@wanadoo.fr
Dalens
P-H
PH
Petitbon
J
J
Gérard
M
M
D002675:Child, Preschool; D006470:Hemorrhage / Q000209:etiology; D006801:Humans; D008297:Male; D009412:Nerve Fibers / Q000473:pathology*; D009900:Optic Nerve / Q000473:pathology*; D020221:Optic Nerve Injuries / Q000473:pathology*; D014796:Visual Perception