Ischemic optic neuropathies could be a result of inflammatory and non inflammatory small vessel disease and have been classified as arteritic and non-arteritic anterior ischemic optic neuropathy respectively. This review has been intended to elucidate the epidemiology, etiology, pathogenesis, clinical picture and management of NAION and the literature search was completed using the published data in Pubmed, Medline, and Ovid over the last five decades.
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