The superior surface of the sphenoid bone is bounded behind by a ridge, which forms the anterior border of a narrow, transverse groove, the chiasmatic groove (optic groove), above and behind which lies the optic chiasma; the groove ends on either side in the optic foramen, which transmits the optic nerve and ophthalmic artery (with accompanying sympathetic nerve fibres) into the orbital cavity.
The left and right optic canals are 25mm apart posteriorly and 30mm apart anteriorly. They are funnel-shaped (narrowest anteriorly).
Researchers at Nanjing Medical University, Department of Neurosurgery have published new data on meningeal neoplasms.(Report)
Nov 28, 2010; New research, 'Visual outcome after extended endoscopic endonasal transsphenoidal surgery for tuberculum sellae meningiomas,' is...