Central retinal vein occlusion Central retinal vein occlusion. A: Retinal hemorrhage in all four quadrants, dilated tortuous veins, and optic disk edema. B: Optical coherence tomography shows cystoid macular edema. C: Fundus fluorescein angiogram shows late leak with petalloid appearance of macula. (Used with permission from Moorfields Eye Hospital, London.) Source: Retina, Vaughan & Asbury's General Ophthalmology, 19e Citation: Riordan-Eva P, Augsburger JJ. Vaughan & Asbury's General Ophthalmology, 19e; 2017 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/2186/vaughan19_ch10_f013c-1.png&sec=165517724&BookID=2186&ChapterSecID=165517649&imagename= Accessed: October 09, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved