Argon laser panretinal photocoagulation under microendeoscopy for iris neovascular after vitrectomy

Objective To explore the effect of argon laser panretinal photocoagulation under microendeoscopy for iris neovascular patients who have been run pars plana vitrectomy.Methods 16 cases (16eyes) with iris neovascularization who undergone argon laser panretinal photocoagulation under microendeoscopy after pars plana vitrectomy were evaluated retrospectively.All cases have been run vitrectomy and part retinal photocoagulation.And among them,there were diabetic retinopathy in 8 eyes,central retinal vein occlusion in 6 eyes and retinal vasculitis in 2 eyes.There were 10 pseudophakic eyes and 6 aphakic eyes.The intraocular pressure(IOP)in 2 eyes were high and others were normal.The Ⅰ stage of iris neovascularization were 14 eves and the Ⅱ stage of iris neovascularizafion were 2 eyes.All cases have been run argon laser panretinal photocoagulation under microendeoscopy.Neovascularization of iris,visual acuity,IOP and postoperative complications were observed comparatively.The follow up time was 3-36 months.Results In 15 of 16 eyes.new vessels in the iris completely disappeared 3 months after photocoagulation.The IOP in 1 eye with neovascular glaucoma was controlled after operation.There were no significant difference in visual acuity between preoperative and postoperative.Postoperative complication was not observed such as iris injury,retinal detachment and endophthalmitis.Conclusion It suggests that argon laser panretinal photocoagulation is a safe and effective therapeutic modality for iris neovascular after pars plana vitrectomy.It also suggests that argon laser panretinal photocoagulation under microendeoscopy is a reliable choice and powerful complement for the pseudophakic and aphakic eyes after pars plana vitrectomy. Key words: Microendeoscopy; Iris neovascular; Argon laser panretinal photocoagulation