The effect of posterior vitreous detachment on the prognosis of branch retinal vein occlusion

VernacularTitle:玻璃体后脱离与视网膜分支静脉阻塞的预后
Author: Shaohong QIAN ; Xinhuai SUN
Publication Type:Journal Article
From: Chinese Journal of Ocular Fundus Diseases 2001;17(1):2-4
CountryChina
Language:Chinese
Abstract: Objective　To determine the effect of posterior vitreous detachment on the prognosis of branch retinal vein occlusion　(BRVO).　Methods　One hundred and sixteen patients (116 eyes) with BRVO who underwent vitreous examination were retrospectively studied.The relationship of vitreous conditions to posterior segment neovascularization and macular edema was statistically investigated.　Results　In 40 ischemic cases,12 of 25 eyes (48.0%) with no posterior vitreous detachment (PVD) or partial PVD developed retinal or optic disc neovascularization ,or both,but only one of the 15 eyes (6.7%) with complete PVD developed neovascularization during a mean follow-up period of 10.7±2.2 months　(P＜0.05).Diffuse macular edema was found in 45 eyes　(38.8%).The incidence of macular edema was significantly higher in eyes with vitreomacular attachment　(51.5%)　than in those with vitreomacular separation　(22.0%)(P＜0.01).　Conclusion　It was suggested that complete PVD may play a role in protecting eyes with BRVO from posterior segment neovascularization and macular edema.