Central Retinal Vein Occlusion (CRVO)

Central Retinal Vein Occlusion

Clinical manifestation

• Non-ischemic type

  • Mild fundus change: retinal hemorrhage and tortuous vein
  • Mild VA decrease
  • Capillary nonperfusion rare
  • Visual field defect (retinal hemorrhage)

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Ischemic type :

• More common
• Extensive retinal hemorrhage and tortuous vein, Multiple cotton-wool spots
• Severe VA decrease
• Widespread capillary nonperfusion, 60% cases present iris neovascularization.

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![[Central Retinal Vein Occlusion CRVO-1745140645712.webp]]

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Branch Retinal Vein Occlusion

![[Central Retinal Vein Occlusion CRVO-1745140668223.webp]]

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ComplicationsZ

1. Change to ischemic type. (Within 3 months / 100 days )
2. Maculopathy (macular edema). - Common cause
3. Retinal ischemia and its sequels:
   • Retinal neovascularisation and retinal Hge. - VEGF
   • Vitreous Hge.
   • Tractional retinal detachment.
   • Neovascular glaucoma.

Treatment

• Antipatelet or antithrombootic drugs: unknown therapeutic effects
• Systemic examination to find out causes (macular laser (argon)) retino pathy treatZ - argo laser photo…
• Corticosteroid if vasculitis exist
• Grid pattern photocoagulation and intravitreal injection for maculopathy
• PRP and intravitreal injection of steroids or AVEGF for retinal neovasculisation. — Ischemia
• Surgery and Laser induced retina-choroid vascular anastomosis

VEGF, ARGON, Surgeryz