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目的 观察视网膜静脉阻塞 (RVO)的眼底荧光血管造影 (FFA)及其对预后的意义 ,方法 对 5 6例 (5 6眼 ) RVO患者进行了 FFA,并随访了 33例患者的视力变化 .结果 视网膜中央静脉阻塞 (CRVO)与分支静脉阻塞 (BRVO)的视网膜循环时间 (RCT)均有延长 (P>0 .0 5 ) .CRVO的 RCT与追踪观察视力的关系呈显著性负相关 (P<0 .0 1) .有视网膜毛细血管无灌注区形成者 2 6例 ,其中视力在 4.0以下者 16例 ,2 6例中合并小动脉闭塞者 10例 ,追踪观察视力 9例在 4.0以下 .黄斑与阻塞支之间有引流小静脉的 10例患者 ,视力均在4.0以上 ,4.5以上者 5例 ,其中 7例未合并侧支形成 .结论 CRVO与 BRVO均有明显的视网膜末梢循环阻滞 .CRVO的RCT短者视力预后好 ,有无灌注区形成及小动脉闭塞者视力预后不良 .黄斑区及时有效地血液回流是 RVO后视功能恢复的重要因素
Objective To observe the fundus fluorescein angiography (FFA) of retinal vein occlusion (RVO) and its significance in prognosis.Methods FFA was observed in 56 patients (56 eyes) with RVO and the visual acuity of 33 patients were followed up.Results The retinal circulation time (RCT) of both central retinal vein occlusion (CRVO) and branch vein occlusion (BRVO) was prolonged (P> 0.05) .The RCV of RCVO was significantly negatively correlated with tracing vision (P < 0 .0 1). There were 26 cases of retinal capillary non-perfusion zone formation, of which 16 cases of visual acuity less than 4.0, 26 cases of small artery occlusion in 10 cases, 9 cases of follow-up visual acuity was below 4.0. 10 patients with drainage veins between the occlusion and the occlusion had visual acuity of more than 4.0 and more than 4.5 in 5 cases, of which 7 cases were not complicated by collateral formation.Conclusions CRVO and BRVO have obvious retinal peripheral circulation block.CRVO Of patients with short RCT had better visual acuity, poor or no prognosis in patients with or without perfusion zone, and timely and effective blood backflow in macula was an important factor in RVO visual function recovery