title: [Aneurysm situated within the optic nerve].
abstract: A case of carotid-ophthalmic aneurysm of unusual location in the optic nerve is reported. The development of the disease was sudden: pain in the eye was followed by unilaternal blindness and manifestations of subarachnoid haemorrhage. The optic nerve was dilated balloon-like, cyanotic and vigorously pulsating. It was divided longitudinally and the aneurysmatic sac was exposed from the nerve. A vascular clip was put on its peduncle communicating with the cervico-ophthalmic portion of internal carotid artery. Despite preserved patency of the ophthalmic artery and partial continuity of the optic nerve, the vision of the eye didn't improve.
mesh_terms: D001766:Blindness / Q000209:etiology; D002343:Carotid Artery, Internal; D005260:Female; D006429:Hemiplegia / Q000209:etiology; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications*; D008875:Middle Aged; D009880:Ophthalmic Artery; D009900:Optic Nerve / Q000098:blood supply*; D013345:Subarachnoid Hemorrhage / Q000209:etiology
vernacular_title: Tetniak umiejscowiony wewnatrz nerwu wzrokowego