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(7)

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Abstract #8642 Published in IGR 5-1

Retinochoroidal collateral veins protect against anterior segment neovascularization after central retinal vein occlusion

Fuller JJ; Mason JO 3rd; White MF Jr; McGwin G Jr; Emond TL; Feist RM
Archives of Ophthalmology 2003; 121: 332-336

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OBJECTIVE: To test the hypothesis that retinochoroidal collateral veins (RCVs), or alternatively, retinociliary or optociliary shunts/collaterals/veins or opticociliary anastomoses, act protectively against the development of anterior segment neovascularization (ASN) following central retinal vein occlusion (CRVO). DESIGN: Case-control retrospective medical record review of patients with CRVO. PATIENTS: The authors identified 107 patients with CRVO, 34 of whom had developed ASN, by reviewing their medical records. After applying exclusion criteria, a case group and an age-, sex-, and visual acuity-matched control group were selected. They analyzed these groups for the presence or absence of RCVs and noted the time course involved in their development. MAIN OUTCOME MEASURES: Anterior segment neovascularization (including neovascularization of the iris and/or anterior chamber angle), neovascular glaucoma, and RCV development. RESULTS: Only one (5.4%) of 19 individuals who developed ASN did so in the presence of RCVs. In contrast, 11 (57.9%) of 19 individuals in the control group developed RCVs. Statistical analysis revealed that patients who developed ASN were roughly 25 times less likely to have had RCVs than individuals who never developed ASN (odds ratio = 24.74; p = 0.001). CONCLUSION: Retinochoroidal collateral veins are negatively associated with ASN post-CRVO and may function in a protective manner against such an outcome.

Dr. J.J. Fuller, Medical College of Georgia, Augusta, GA, USA. retinaconsultant@mindspring.com

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Classification:

9.4.5.1 Neovascular glaucoma (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.5 Glaucomas associated with disorders of the retina, choroid and vitreous)

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