Abstract
Introduction: Several pathologies can affect the optic canal (OC) and the optic nerve (ON) and ophthalmic artery. Tumors, vascular abnormalities, bony dysplasia, connective tissue disease, and trauma are examples. The compression of the ON, leading to visual impairment, is an indication for decompression OC. The OC decompression is usually recommended through a transcranial approach. Recently, the advances in endoscopic skull base surgery techniques allowed achieving the decompression through an endoscopic endonasal approach (EEA), because of the straightforward access to the OC in the sphenoid sinus.
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