Abstract
Objective To analyze and compare the effect of vitrectomy on different stages of proliferative diabetic retinopathy (PDR).Methods Vitrectomy was undergone in 110 cases (120 eyes) of PDR.Phase Ⅳ,Ⅴ and Ⅵ of PDR were in 42 cases (44 eyes),48 case (52 eyes) and 20 case(24 eyes).The improvement rate and effective rate of visual function in every stages were compared after follow-up for 6 ～ 12 months.Results In phase Ⅳ,Ⅴ and Ⅵ of PDR,improvement rates of the visual function were 88.6％,73.1％ and 54.2％ (x2 =7.163,P =0.026) ; the effective rates were 93.2％,53.9％ and 37.5％ (x2 =7.407,P =0.023).Conclusion Vitrectomy is the effective method for proliferative diabetic retinopathy.The earlier vitrectomy is performed,the effect is more significant. Key words: Vitrectomy; Diabetic retinopathy, proliferative ; Effect
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