Gaze-evoked amaurosis.
Gaze-evoked amaurosis is a transient monocular loss of vision occurring in a particular direction of eccentric gaze. Six cases are reported with a mean follow-up of 5 years; three with optic nerve sheath meningiomas and three with orbital cavernous hemangiomas. Five of the six patients have had no visual deterioration during follow-up. Bilateral optic nerve sheath meningiomas led to visual deterioration in both eyes of one patient, but gaze-evoked amaurosis was present in only one eye. The symptom of gaze-evoked amaurosis, while alarming, is not predictive of permanent visual loss. Possible mechanisms for gaze-evoked amaurosis include inhibition of axonal impulses or transient optic nerve ischemia.
D000328:Adult; D001766:Blindness / Q000209:etiology*; D003390:Cranial Nerve Neoplasms / Q000150:complications; D005260:Female; D006392:Hemangioma, Cavernous / Q000150:complications; D006801:Humans; D008297:Male; D008579:Meningioma / Q000150:complications; D008875:Middle Aged; D009901:Optic Nerve Diseases / Q000150:complications; D009918:Orbital Neoplasms / Q000150:complications*; D014057:Tomography, X-Ray Computed