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Central Retinal Vein Occlusion

Central Retinal Vein Occlusion is a topic covered in the 5-Minute Emergency Consult.

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Disease characterized by decreased visual acuity resulting from venous occlusion of any etiology


  • Ischemic CRVO:
    • 20–25% of cases
    • Blocked venous return leads to backflow in capillaries, hemorrhage, and macular edema.
    • Limited space at lamina cribrosa predisposes to thrombosis due to slow flow and vessel wall changes
    • Theorize that arteriosclerotic changes in the adjacent artery may impinge upon the vein.
    • Blood viscosity also thought to play a role
  • Nonischemic CRVO:
    • Milder, incomplete occlusion

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Rosen, Peter, et al., editors. "Central Retinal Vein Occlusion." 5-Minute Emergency Consult, 5th ed., Lippincott Williams & Wilkins, 2016. Emergency Central, emergency.unboundmedicine.com/emergency/view/5-Minute_Emergency_Consult/307703/all/Central_Retinal_Vein_Occlusion.
Central Retinal Vein Occlusion. In: Rosen P, Shayne P, Barkin AZ, et al, eds. 5-Minute Emergency Consult. 5th ed. Lippincott Williams & Wilkins; 2016. https://emergency.unboundmedicine.com/emergency/view/5-Minute_Emergency_Consult/307703/all/Central_Retinal_Vein_Occlusion. Accessed April 23, 2019.
Central Retinal Vein Occlusion. (2016). In Rosen, P., Shayne, P., Barkin, A. Z., Wolfe, R. E., Hayden, S. R., Barkin, R. M., & Schaider, J. J. (Eds.), 5-Minute Emergency Consult. Available from https://emergency.unboundmedicine.com/emergency/view/5-Minute_Emergency_Consult/307703/all/Central_Retinal_Vein_Occlusion
Central Retinal Vein Occlusion [Internet]. In: Rosen P, Shayne P, Barkin AZ, Wolfe RE, Hayden SR, Barkin RM, Schaider JJ, editors. 5-Minute Emergency Consult. Lippincott Williams & Wilkins; 2016. [cited 2019 April 23]. Available from: https://emergency.unboundmedicine.com/emergency/view/5-Minute_Emergency_Consult/307703/all/Central_Retinal_Vein_Occlusion.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Central Retinal Vein Occlusion ID - 307703 ED - Rosen,Peter, ED - Shayne,Philip, ED - Barkin,Adam Z, ED - Wolfe,Richard E, ED - Hayden,Stephen R, ED - Barkin,Roger M, ED - Schaider,Jeffrey J, BT - 5-Minute Emergency Consult UR - https://emergency.unboundmedicine.com/emergency/view/5-Minute_Emergency_Consult/307703/all/Central_Retinal_Vein_Occlusion PB - Lippincott Williams & Wilkins ET - 5 DB - Emergency Central DP - Unbound Medicine ER -