University of Iowa Health Care

Ophthalmology and Visual Sciences

EyeRounds Online Atlas of Ophthalmology

Contributor: Andrew Doan, MD, PhD, for Sohan S. Hayreh, MD, PhD, University of Iowa

Category: Neuro-ophthalmology

Non-arteritic anterior ischemic optic neuropathy (NAION)


non-arteritic anterior ischemic optic neuropathy (NAION)

This patient experienced bilateral vision loss on awakening. She had bilateral optic nerve swelling with the visual fields below. Note how the visual field defect respects the horizontal raphe distribution of the nerve fiber layer.

non-arteritic anterior ischemic optic neuropathy (NAION)

1) Fundus photographs of right eye of a diabetic patient with non-arteritic AION showing. During early stages optic disc edema involving the superior temporal part of the optic disc and prominent vessels in that region.

non-arteritic anterior ischemic optic neuropathy (NAION)

2) During later stages: pale color (atrophy) in the upper half of the optic disc - more marked in the temporal than the nasal part, and spontaneous resolution of the prominent blood vessels on the optic disc.

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Ophthalmic Atlas Images by, The University of Iowa are licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

last updated: 02-08-2008
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