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Anterior Ischemic Optic Neuropathy ( AION )

Anterior Ischemic Optic Neuropathy ( AION )

Anterior Ischemic Optic Neuropathy ( AION ) Infarction of optic nerve head just posterior to lamina cribrosa due to inadequate perfusion by posterior ciliary arteries; results in acute visual loss. 2 forms: arteritic (giant cell arteritis); nonarteritic (ischemic). Findings:decreased color vision and acuity, positive RAPD, VF loss (altitudinal or arcuate defects most common, central scotomas also occur), unilateral optic disc ... Read More »

Ischemic central retinal occlusion ( CRVO )

Ischemic central retinal occlusion ( CRVO )

Ischemic central retinal occlusion ( CRVO ) -Marked tortuosity and prominence to the venous system. -Widespread hemorrhages. -Macular edema. -The non-ischemic vein occlusion has a better prognosis. It may, however, with propagation of the clot, progress to become an ischemic occlusion with widespread capillary non-perfusion, vitreous hemorrhage, and a risk of anterior-segment neovascularization or rubeosis iridis and hemorrhagic glaucoma. Source:  Ophthalmology Atlas(Photos ... Read More »

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