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Table of Contents
Vol. 182, No. 1, 1981
Issue release date: 1981
Ophthalmologica 1981;182:29–41

Posterior Ischemic Optic Neuropathy

Hayreh S.S.
Ocular Vascular Clinic, Department of Ophthalmology, University of Iowa, Iowa City, Iowa, USA

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3 patients (5 eyes) with posterior ischemic optic neuropathy (PION) are presented. PION is a distinct clinical entity, caused by ischemia of the posterior part of the optic nerve. These eyes presented with a visual acuity varying from normal to no light perception, optic nerve-related visual field defects, and no fundus abnormality (on ophthalmoscopy or fluorescein fundus angiography) at the onset of the disease and for about a month thereafter, but after about 5–6 weeks the optic disc developed atrophic changes. The pathogenesis, differential diagnosis and possible management of PION are discussed.

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