Viual Outcome and Rik Factor for Light Perception and No Light Perception Viion After Vitrectomy for Diabetic Retinopathy

Purpoe To ae the viual outcome following vitrectomy for diabetic retinopathy compared with previou tudie; to evaluate rik factor for light perception (LP) and no light perception (NLP) viion after diabetic vitrectomy. Deign Retropective medical record review. Method The chart of 100 conecutive patient who underwent vitrectomy for proliferative diabetic retinopathy between November 1, 1997, and November 30, 1998, were reviewed. urgical technique included tandard par plana vitrectomy with combination of delamination and egmentation of gliotic tractional membrane uing bimanual technique. All patient had pot-operative follow-up of at leat 12 month. everal factor were analyzed for their effect on poor viual outcome (LP and NLP) uing Fiher’ exact tet. Reult Pot-vitrectomy, 73% of diabetic patient had table or improved viion; 16% had worened but functional viion, defined a wore but till ≥ 20/400; 4% had worened but ambulatory viion, defined a wore but till count finger (CF) or hand motion (HM); and 7% had poor viual outcome, LP or NLP. Reultant viual acuity wa ≥20/40 in 38% of patient, 20/50 to 20/100 in 34%, 20/120 to CF in 18%, HM in 3%, LP in 4%, and NLP in 3%. Rik factor for eye with LP and NLP viion included pre-operative iri neovacularization (INV), P = .05, pot-operative INV, P = .02, pot-operative macular ichemia, P = .0001, and pot-operative vitreou hemorrhage (VH), P = .02. Concluion Pre-operative and pot-operative INV, pot-operative macular ichemia, and pot-operative VH appear to be rik factor for LP and NLP viion following diabetic vitrectomy, wherea overall improvement in urgical technique and viual outcome continue to be reported.