The cavernous sinus.

The parasellar region, in particular the cavernous sinus, represents the confluence of critical structures involved in both the afferent and efferent visual pathways. It is not surprising that lesions affecting the area of the cavernous sinus most frequently present with neuro-ophthalmic complaints, which include double vision, decreased vision, pain, and numbness. Neuro-surgical intervention in the area of hte cavernous sinus often produces neuro-ophthalmic complications. A rehabilitative effort directed to the neuro-ophthalmic manifestations is essential for patients with skull-base pathology.