糖尿病 (diabetes mellitus,DM)是一种眼部并发症较多的代谢及血管性疾病 ,临床分为两种类型 :1型 ,胰岛素依赖型。 2型 ,非胰岛素依赖型。糖尿病视网膜病变 (diabetic retinopathy,DR)是 DM最常见的并发症之一 ,也是各国四大致盲眼病中占第 1或第 2的眼病 [1 ]。DR患病率在世 Diabetes mellitus (DM) is a metabolic and vascular disease with more eye complications. It is clinically divided into two types: type 1, insulin-dependent. Type 2, non-insulin-dependent. Diabetic retinopathy (DR) is one of the most common complication of DM and the first or second eye disease among the four major blind eye diseases in various countries [1]. The prevalence of DR is alive