Central Retinal Vein Occlusion
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In central retinal vein occlusion, retinal veins appear dilated and tortuous. The fundus may appear congested and edematous. Numerous retinal hemorrhages are also characteristic.
Image courtesy of A. Viestenz, Ophthalmic Clinic of the Health Center of the University of Erlangen-Nürnberg, via the Online Journal of Ophthalmology (www.onjoph.com).