Examination findings usually include decreased visual acuity, a visual field defect, color vision loss, a relative afferent pupillary defect, and a swollen<unk>  nerve head. Posterior<unk>  occurs arteritic, nonarteritic, and surgical settings. It is characterized by acute vision loss without initial disc edema, but with subsequent<unk>  disc atrophy.
Ischemic optic neuropathy
Posterior ischemic optic neuropathy
Anterior ischemic optic neuropathy
Optic neuritis
Arteritic anterior ischemic optic neuropathy
Autoimmune optic neuropathy
Ocular ischemic syndrome
Toxic and nutritional optic neuropathy