BRANCH VEIN OCCLUSION COLLABORATIVE STUDY

这项研究的目的是记录自然历史， 如果光凝治疗在处理分支静脉中有用， 闭塞及其并发症。 氩激光光凝治疗 将评价以下管理：a）主要分支静脉闭塞， 新生血管形成; 1）改善或维持视力; 2）改善或预防 黄斑水肿; 3）防止新血管形成的发展。 B）重大 分支静脉闭塞伴新生血管形成; 1）改善或维持视力 2）控制或破坏新生血管形成; 3）预防玻璃体出血 和/或视网膜脱离; 4）改善或预防黄斑水肿。 c）黄斑 分支静脉闭塞伴黄斑水肿和视力下降; 1）改善或 维持视力; 2）改善黄斑水肿。

The objectives of this study are to document the natural history and determine if the photocoagulation treament is useful in the management of branch vein occlusion and its complications. The treatment by argon laser photocoagulation will be evaluated for the management of: a) Major branch vein occlusion without neovascularization; 1) Improve or maintain visual acuity; 2) Improve or prevent macular edema; 3) Prevent the development of neovascularization. b) Major branch vein occlusion with neovascularization; 1) Improve or maintain visual acuity; 2) Control or destroy neovascularization; 3) Prevent vitreous hemorrhage and/or retinal detachment; 4) Improve or prevent macular edema. c) Macular branch vein occlusion with macular edema and decreased vision; 1) Improve or maintain visual acuity; 2) Improve macular edema.