糖尿病视网膜病变(diabetic retinopathy,DR)是糖尿病微血管病变最重要的表现,是糖尿病的严重并发症之一。有关资料表明,DR的发病率在逐年上升,并具有高致盲率的特点,严重威胁人们的生活质量,是当今医学领域亟待解决的重大攻关课题。1发病机制DR可分为两期,即非增殖性(背景期)视网 Diabetic retinopathy (DR) is the most important manifestation of diabetic microangiopathy and one of the serious complications of diabetes. Relevant data show that the incidence of DR is increasing year by year, and has the characteristics of high blindness rate, a serious threat to people’s quality of life, is a major issue to be solved in the medical field today. 1 pathogenesis DR can be divided into two phases, namely non-proliferative (background) retinal