Coats在1908年将有大片渗出的视网膜病分三型:第一型血管无异常;第二型血管有异常;第三型动静脉吻合。后者尔后称为视网膜血管瘤。Leber(1912)报告3例第二型Coats病,并称为伴有视网膜变性的Leber多发性粟粒性微血管瘤。其共同特征为视网膜有多发性微血管瘤,特别见于视网膜小动脉。Gass等最近报告的后极部眼底视网膜局限性毛细血管扩张,称为特发性傍中心凹视网膜毛细血管扩张。本文作者观察 Coats in 1908 will have large exudative retinopathy divided into three types: the first type of blood vessels without abnormalities; the second type of blood vessels have abnormalities; the third type of arteriovenous anastomosis. The latter is later called retinal hemangiomas. Leber (1912) reported 3 cases of type 2 Coats disease and was referred to as Leber’s multiple miliary microangiomas with retinal degeneration. Their common feature is multiple retinal microangiocentesis, especially found in the retinal artery. Recent reports by Gass et al. Of posterior pole retinal capillaries have been described as idiopathic povera-foveal retinal telangiectasias. The author of this article observes