视网膜毛细血管和静脉的微血管瘤(aneurysm)是常见的,视网膜动脉较大分枝的动脉瘤(macroancurysm)却少见。上个世纪对本病已有一定的认识和描述,但直至Robertson(1973)才用了动脉瘤(macroaneurysm)的命名。作者报告4例。例1:患者16岁,右眼视力下降一年半。右颞下枝动脉有一动脉瘤,周围有微动脉瘤及环形类脂质渗出。视力0.05,周边视野鼻侧缩小。荧 Retinal capillaries and veins of the aneurysm are common, with large branches of the retinal artery aneurysms (macroancurysm) are rare. The last century has some understanding of the disease and description, but until Robertson (1973) to use the aneurysm (macroaneurysm) named. The authors report 4 cases. Example 1: Patient 16 years old, right eye vision decreased by a year and a half. Right anterior descending artery has an aneurysm around the micro-aneurysms and annular lipid-like exudation. Visual acuity of 0.05, nasal narrowing of peripheral vision. fluorescent