Optical Coherence Tomography upon Presentation of Non-Arteritic Anterior Ischemic Optic Neuropathy: Patterns of Edema and Atrophy in Acute and Subacute Disease

Non-arteritic anterior ischemic optic neuropathy (NAION) is characterized by acute onset of vision loss with optic disc edema secondary to hypoperfusion of the nerve head. The disc appearance evolves over time from edema to atrophy. Sectors of atrophy correspond well with areas of visual field loss.2 We have observed in practice that, acutely, sectors of optic disc edema do not always correlate with areas of visual field loss. The purpose of this study is to characterize visual field deficits in relation to areas of optic disc edema within the first 30 days of vision loss.