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糖尿病性视网膜病(DR)是30～64岁糖尿患者失明的最常见病因,目前在美国也是造成新盲的第二位病因。糖尿病病程愈长,视网膜病发病率也愈高。DR存在血液动力学和结构上的异常,这是由多种不明的生化或内分泌机制损害视网膜血管所造成的。DR的发生不仅与病程持续时间有关,而且与病情未获控制的高血糖浓度有关。DR可分为基础视网膜病(background retinopathy)和增殖性视网膜病(proliferative retinopathy)两类,前者特征有微动
Diabetic retinopathy (DR) is the most common cause of blindness in diabetics aged 30-64 and is currently the second leading cause of new blindness in the United States. The longer the duration of diabetes, the higher the incidence of retinopathy. DR has haemodynamic and structural abnormalities caused by damage to retinal blood vessels by a variety of unknown biochemical or endocrine mechanisms. The occurrence of DR is not only related to the duration of the disease, but also to uncontrolled hyperglycemia. DR can be divided into two kinds of background retinopathy and proliferative retinopathy, the former features micro-movement