Acute Painless Vision Loss Caused by Optic Nerve Cavernoma - A Rare Suprasellar Vascular Malformation

A 49-year-old healthy woman was evaluated in the eye emergency room for acute progressive painless vision loss in the right eye over 2 days. Six weeks prior to the visual loss, she had a routine normal ocular examination elsewhere. She had tingling sensation in the neck and arms for years. She reported intermittent hearing problem in the right ear and a few episodes of lightheadedness