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视网膜微血管瘤是毛细血管向外扩大的憩室,见于糖尿病,分枝和中心静脉阻塞、血液粘性过大综合征及其他眼病。报告3例异常大的毛细血管瘤。2眼曾有静脉分枝阻塞,1眼曾有中心静脉阻塞。1例合并脂质渗出,浆液性黄斑脱离及视力丧失。血管瘤位于由原先阻塞的静脉引流的视网膜缺血区。氩激光治疗后眼底进步,视力提高。视网膜血管瘤可源自动脉、毛细血管、静脉或三者联合发生。发生于第三分枝以内的视网膜动脉孤立的血管瘤谓之“大”血管瘤(macroaneurysm)。常为单侧,高血压或动脉硬化的老年人易发生。或许发生于血管阻塞后。大血管瘤常导致视网膜、视网膜前或玻璃体出血、视网膜水肿
Retinal capillary hemangiomas are diverticulas with outward enlargement of the capillaries found in diabetes, branch and central vein occlusion, hyperviscosity of blood and other eye diseases. Three cases of abnormal capillary hemangioma were reported. 2 eyes had vein branches blocked, 1 had central vein occlusion. 1 case with lipid exudation, serous macular detachment and loss of vision. Hemangiomas are located in the retinal ischemic area that is drained by previously obstructed veins. Fundus progress after argon laser treatment, vision improved. Retinal hemangiomas may originate from arteries, capillaries, veins or all three. A retinal artery-isolated hemangioma that occurs within the third branch is referred to as “macroaneurysm.” Often unilateral, high blood pressure or arteriosclerosis in the elderly prone. May occur after vascular occlusion. Large hemangiomas often lead to the retina, retinal or vitreous hemorrhage, retinal edema