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Treatment outcomes on neovascularization after CRAO treated with hyperbaric oxygen.

Central retinal artery occlusion (CRAO) is a condition that causes sudden vision loss due to obstruction of the retinal artery, typically from a thrombotic or embolic source. It is often associated with atherosclerotic risk factors, including cardiovascular disease, diabetes, hyperlipidemia, and a history of cerebrovascular disease. CRAO often leads to a poor visual outcome as well as neovascularization of the iris, retina, and optic disc, which can exacerbate vision loss and cause pain. While there are several treatment modalities for CRAO, few have been proven to be effective in decreasing the effects of neovascularization. The use of hyperbaric oxygen (HBO2) therapy is often used in the treatment of CRAO due to its ease of use and relatively benign side effect profile. This study aims to assess the degree of improvement in visual acuity (VA) and neovascularization following HBO2. Our data ultimately shows that 20% of patients developed neovascularization after HBO2 compared to 29.8% of those who did not undergo HBO2 (p<.05). Our findings suggest that HBO2 has a statistically significant protective effect against neovascularization and may improve long-term visual acuity.

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