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Purpose:To describe the effects of intravitreal bevacizumab in eyes with macular edema resulting from central retinal vein occlusions (CRVO).Methods:Retrospective consecutive case series of patients diagnosed with macular edema from CRVO who received intravitreal bevacizumab.Results:Thirty eyes of 29 patients with an average age of 72 years (range, 54–87 years) had intravitreal bevacizumab injections. Mean follow-up was 18.1 weeks. Initial mean visual acuity was 20/394. At the 1- and 2-month follow-up, mean visual acuity improved to 20/237 (n = 26, P = 0.04) and 20/187 (n = 21, P = 0.008), respectively. At the 3- and 4-month follow-up, visual acuity improved from 20/228 to 20/157 (n = 15, P = 0.05) and from 20/313 to 20/213 (n = 11, P = 0.03), respectively. No significant changes in visual acuity were found after 4 months though the number of patients in this group was small. Duration of treatment effect following an injection appears to be limited to 2 months for most patients. No ocular or systemic adverse reactions were noted.Conclusions:The visual benefits of intravitreal bevacizumab for macular edema due to CRVO are apparent early but are not sustained without repeated injections. Larger clinical studies with long-term follow-up will be necessary to better elicit the best regimen for this therapy.

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