label: Nonarteritic anterior ischemic optic neuropathy
label_lc: nonarteritic anterior ischemic optic neuropathy
description: "An acute condition characterized by sudden visual loss (usually discovered in the morning), optic disc edema at onset, optic disc-related visual field defects. Nonarteritic anterior ischemic optic neuropathy can be associated with flame hemorrhages on the swollen disk or nearby neuroretinal layer, and sometimes with nearby cotton-wool exudates."