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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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    Basics

    Description

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

    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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    Citation

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    TY - ELEC T1 - Central Retinal Vein Occlusion ID - 307703 ED - Barkin,Adam Z, ED - Barkin,Roger M, ED - Hayden,Stephen R, ED - Rosen,Peter, ED - Schaider,Jeffrey J, ED - Shayne,Philip, ED - Wolfe,Richard E, 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 -