Vitrectomy combined with cataract surgery for proliferative diabetic retinopathy in 52 cases

Objective To evaluate the outcome of vitrectomy combined with cataract surgery for proliferative diabetic retinopathy(PDR).Methods Totally 52 eyes of 48 PDR patients underwent vitrectomy combined with cataract surgery from July 2005 to December 2009 were retrospectively analyzed.Surgery procedure,preoperative and postoperative best corrected visual acuity and complication were retrospectively analyzed.The follow-up lasted for more than seven months.Results Silicon oil injection rate increased with the progression of PDR stage.Silicon oil injection rate in stage VI were significantly higher than that in stage IV and V(P0.01).During the follow-up,71.15%(37/52 eyes) showed improved visual acuity postoperatively.The postoperative visual acuity improve rate decreased with the progression of PDR(100% in stage IV,92.31% in stage V and 62.16% in stage VI) and there was no significant difference among different stages(P0.05).The number of eyes with visual acuity better than 0.1 were increased from 5(11.36%) before operation to 33(75%) postoperatively.Postoperative visual acuity improved significantly compared with that before operation.(P0.01).All eyes(100%) showed anatomic repair of retinal detachment after the surgery.Vitreous hemorrhage was found in one eye,after-cataract was found in seven eyes post combined operation.High intraocular pressure was found in six eyes,silicon oil emulsification was found in four eyes in silicon oil injection group.Conclusion Vitrectomy combined with cataract surgery is safe and effective in treating patients with PDR.Combined surgery may avoid a second operation for patients with cataract and provide earlier visual rehabilitation.