In DR group, plasma tHcy was significantly higher in proliferative diabetic retinopathy(PDR) group than that in background diabetic retinopathy(BDR) group(t=2.405,P=0.031).

• 在DR组 ,增殖性视网膜病变 (PDR)亚组总Hcy水平显著高于背景性视网膜病变 (BDR)亚组 (t=2 4 0 5 ,P =0 0 31)。