Optic Nerve Diffusion Restriction- A Non-invasive Technique for Idiopathic Intracranial Hypertension in Patients with Papilledema. (P5-12.006)

Idiopathic intracranial hypertension (IIH) is defined as intracranial pressure (ICP) greater than 25 cmH2O, with a constellation of clinical and radiographic findings including permanent vision loss, venous sinus thrombosis and hydrocephalus respectively. An MRI brain with optic nerve diffusion restriction can add to the diagnostic yield in difficult cases.