Combined Surgery In The Treatment Of Proliferative Diabetic Retinopathy And Cataract

Objective:To investigate the efficacy of phacoemulsification or pars plana lensectomy combined with vitrectomy in the treatment of proliferative diabetic retinopathy and cataract.Methods:Seventy-nine cases(90eyes) with PDR and cataract who were undergone two different combined surgery from Fri 2003 to Dec 2006 in our hospitalwere reviewed,the cases were divided into two groups.Groupl was treated with the techniques included phacoemulsification.Combined vitrectomy in 43 eyes,IOL was inserted into the introcapsule via the corneascleral incision.Group2 was treated with the t techniques of lensectomy via the pars plana combined posterior segment surgeries in 47eyes,the anterior capsule was preserved and the epithelium was suctioned and scraped off,IOL was inserted via the corneascleral incision on the anterior capsule,of which the center area 4.5～5mm in diameter was cut.Results:Seventy-nine cases(90eyes) with PDR and cataract after Surgery were followed-up for 2 months to 3 years.Postoperatively, There were significanted differences between two groups.In visual improvement(x~2=21.0, P＜0.05 in group 1,x~2=11.571,P＜0.05 in group2,There were Significant difference between two groups in visual.Improvement(P＜0.05.Iris neovascularization(INV). Occurred in one eye in group 1 and 8 eyes in group 2.during 1.5～11months after. Surgery(P＜0.05).Conclusion:Phacoemusification and.Simultaneous introcapsule lens implantation combined with vitrectomy in the treatment of proliferatived diabetic retinopathy and cataract is more effective than pars plana lensectomy combined with vitrectomy.The surgery obviously improves the visual outcome in the majority of selected eyes with less significant complications and occurrence of iris neovascularization(INV).