Background: A study of various ocular & systemic risk factors in Retinal Vein Occulation (RVO) at tertiary eye care centre. Methods: A prospective study included 50 eyes of 50 patients, in period of September 2010 to August 2012. Inclusion criteria: 1. Age >25 years, 2. All newly diagnosed cases of vein occlusion. Exclusion criteria: 1. Age <25 years 2. All other ocular diseases causing significant visual impairment. A detailed history, ophthalmic & systemic examinations with all necessary investigations-as and when required were done. Results: In our study, RVOs were more common in males-26 (52%) & in 56-65 years of age group-16 (32%). BRVO (Branch Retinal Vein Occlusion)s were more common than CRVO (Central Retinal Vein Occlusion)-Nonischemic (26%) >Ischemic (24%). In risk factors-most common was hypertension-in 38 (76%) patients. Followed by descending order, hyperlipidemia 27 (54%) >diabetes mellitus 16 (32%) >tobacco 14 (28%) >hyper homocystinemia 4 (8%) >severe alcohol 2 (4%). The complications were more in ischemic than Nonischemic-CRVO >BRVO-they were macular edema 43 (86%) >neovascularization at iris-14 (28%) >neovascularization at angle-10 (20%) >neovascular glaucoma-4 (8%). Conclusion: RVOs are more common with increasing age, in males & most common risk factor is hypertensive. Most common cause for vision loss is macular edema-ischemic >non-ischemic.
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