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G.O. Waring, IV, J. Cedeno–Richiez, M. Patel, D.R. Lazzaro, E. Shrier; Paired Arteriovenous Crossing as a Risk Factor in Branch Retinal Vein Occlusion . Invest. Ophthalmol. Vis. Sci. 2006;47(13):5176.
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To evaluate the frequency and relative locations of paired artery anterior to vein crossings in eyes with branch retinal vein occlusion (BRVO).
We retrospectively reviewed digital fundus photos and fluorescein angiography from 14 patients with a recent diagnosis of BRVO and compared our findings with the normal fellow eye as a control group. Crossing patterns and locations from the optic disc rim to the arteriovenous crossings associated with the BRVO were measured with the TOPCON IMAGEnet 2000TM software.
"Double" artery anterior to vein vascular crossing was observed in 100% of BRVO patients versus 43% of control eyes (p = 0.008). BRVO was observed in the superotemporal quadrant in 86% of study eyes and the inferotemporal quadrant in 14% of study eyes (p < 0.001). Artery anterior to vein crossing occurs more commonly in eyes affected with BRVO relative to control eyes (p = 0.008).
We demonstrate an increased prevalence of double artery anterior to vein crossing in eyes affected with BRVO.
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