BRANCH VEIN OCCLUSION COLLABORATIVE STUDY

这项研究的目的是记录自然历史， 确定光凝治疗在分支的管理中是否有用 静脉闭塞及其并发症。 氩激光治疗 将评价光凝固术用于以下管理：1. 主分支静脉 没有新血管形成的闭塞：a. 改善或维持视敏度; B. 改善或预防黄斑水肿; c. 防止发展 新生血管形成 2. 主要分支静脉闭塞伴新生血管形成： a. 改善或维持视敏度; B. 控制或摧毁 新血管形成; c. 预防玻璃体出血和/或视网膜脱离; D. 改善或预防黄斑水肿。 3. 黄斑分支静脉闭塞伴 黄斑水肿和视力下降：a. 改善或维持视敏度; B. 改善黄斑水肿。 今年的目标是让这个特殊的中心招募 到1978年6月30日，有31名患者进入研究。 自1978年7月1日以来， 作为招募的一部分，共检查了70名患者， 分支静脉闭塞研究。 这70名患者中有33名 已入组分支静脉闭塞研究。

The objectives of this study are to document the natural history and to determine if photocoagulation treatment 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: 1. Major branch vein occlusion without neovascularization: a. Improve or maintain visual acuity; b. Improve or prevent macular edema; c. Prevent the development of neovascularization. 2. Major branch vein occlusion with neovascularization: a. Improve or maintain visual acuity; b. Control or destroy neovascularization; c. Prevent vitreous hemorrhage and/or retinal detachment; d. Improve or prevent macular edema. 3. Macular branch vein occlusion with macular edema and decreased vision: a. Improve or maintain visual acuity; b. Improve macular edema. The goals set for the current year were for this particular center to recruit thrity-one patients into the study by June 30, 1978. Since July 1, 1978, a total or seventy pateints have been examined as a part of the recruitment for the Branch Vein Occlusion Study. Thirty-three of these seventy patients have been enrolled in the Branch Vein Occlusion Study.