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CRVO (Pathognomonic Feature for ISCHEMIC CRVO differentiating from Non…
CRVO
Pathognomonic Feature for ISCHEMIC CRVO differentiating from Non Ischemic CRVO
Presence of RAPD
Visual Field defects
Reduced amplitude of “b” wave of ERG
Treatment
Intravitreal Anti - VEGF
Intravitreal TRIAMCINOLONE for CME & Neovascularization
Pan retinal PhotoCoagulation (PRP)
for Neovascularization
Par plana Vitrectomy
in case of Vitreous Haemorrhage
Non Ischemic (Venous stasis Retinopathy ) Most Common
Early cases
Venous Congestion & Superficial Flame shaped Haemorrhage
Late cases
Sheathing of Main veins
Cystoid Macular Edema
Differential Diagnosis
Diabetic Retinopathy ➡️Bilateral
CRVO ➡️ Unilateral
Ocular Ischemic syndrome (OIS ) ➡️ No tortuosity
CRVO ➡️ Tortuosity
Ischemic CRVO ( Haemorrhagic Retinopathy )
Sudden Occlusion of Central retinal Vein
Marked sudden Visual Loss
RAPD
Early stage
Massive Retinal Haemorrhage ( Splashed - Tomato Appeareance)
Numerous Cotton Wool spots
Haemorrhagic & Edematous Macular area
Late stage
Neovascularization at disc (NVD & NVE)
Chronic cystoid Macular Edema With Pigmentory Changes
Complications
Rubeosis iridis / Neovascular Glaucoma