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为了便于讨论,作者将糖尿病视网膜病变分成两个阶段:第一为眼底变化阶段,可见到视网膜血管被微小动脉瘤堵塞和视网膜的其它异常改变;第二为血管增殖阶段,表现为新生血管和结缔组织增殖,多发生在视网膜表面或视神经乳头,也可累及玻璃体。增殖性视网膜病变是第一阶段发展的必然结果,可在眼底病变阶段数年后发生。近年来
In order to facilitate the discussion, the author divided diabetic retinopathy into two stages: the first stage of fundus changes, we can see retinal blood vessels blocked by small aneurysms and other abnormal changes in the retina; the second stage of vascular proliferation, manifested as neovascularization and connective Tissue proliferation, occur more in the retina or optic nerve head, can also affect the vitreous. Proliferative retinopathy is the inevitable result of the first phase of development, which can occur several years after the stage of retinopathy. In recent years