Abstract
Compressive optic neuropathy is an important cause of visual loss. Some etiologies of this conditionare: tumor compression, pachymeningitis, fractures and vascular compressions. Among intracranialtumors, meningiomas account for about 36% of cases, with approximately 25% of them located atthe base of the skull. In suprasellar and clinoidal meningiomas, in particular, the rates of visual lo…