optic nerve sheath fenestration

Also found in: Acronyms.

op·tic nerve sheath fen·es·tra·tion

the cutting of a window in the dura of the optic nerve sheath to relieve papilledema and prevent further loss of optic nerve fibers.
References in periodicals archive ?
KEYWORDS: Optic nerve sheath fenestration, Papilledema, Idiopathic Intracranial hypertension.
Medical treatment includes Acetazolamide, Steroids, Topiramate, Frousemide and surgical treatment options include Optic Nerve Sheath Fenestration (ONSF) or CSF shunt (lumboperitoneal shunts, ventriculo-peritoneal shunts, or ventriculoatrial shunt).
Controversies: Optic nerve sheath fenestration versus shunt placement for the treatment of idiopathic intracranial hypertension.
Benign intracranial hypertension: visual loss and optic nerve sheath fenestration.
Results of optic nerve sheath fenestration for pseudotumorcerebri.
Subtenon's local anaesthesia for optic nerve sheath fenestration.