Clinical analysis of therapeutic effect in treatment of 110 cases of proliferative diabetic retinopathy by vitrectomy

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