TY - CHAP M1 - Book, Section TI - Central Retinal Vein Occlusion A1 - Effron, David A1 - Forcier, Beverly C. A1 - Wyszynski, Richard E. A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason Y1 - 2021 N1 - T2 - The Atlas of Emergency Medicine, 5e AB - Patients are usually older individuals and complain of sudden, painless visual loss in one eye. The vision loss is usually not as severe as CRAO and may vary from normal to hand motion. Funduscopy in a classic, ischemic central retinal vein occlusion (CRVO) shows a “blood and thunder” fundus: hemorrhages (including flame, dot, or blot, preretinal, and vitreous) and dilation and tortuosity of the venous system. The arterial system often shows narrowing. The disk margin may be blurred. Cotton wool spots and edema may be seen. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/11/06 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181039624 ER -