Abstract
Objective To observe the of panretinal photocoagulation for diabetic retinopathy of different staging.Methods According the treatment technique stipulations formulated by DRPSG(Diabetic Retinopathy Photocoagulation study Group),216 eyes in 135 cases respectively suffering form preproliferrative diabetic retinopathy(PPDR),proliferative diabetic retinopathy (PDR) were treated with panretinal photocoagulation.These patients were received the treatment of subpanretinal photocoagulation (Sub-PRP),standard panretinal photocoagulation(S-PRP) and extra panretonal photocoagulation (E-PRP).All these treatment were performed with the range and parameters provided by the treatment technique stipulations.The Fundus Fluorescein Angiography(FFA) and color photograph were taken 3 m,6 m and 12 m after the treatmemt.For those cases with remaining new vessels and non-perfusion areas,the treatment was complemented with further photocoagulation.The folllowup period was 3-48 months.Results Visual acuity were improved or maintained in 133 eyes(82.5%) in group of PPDR,34eyes(61.9% ) in group if high risk PDR.After one time panretinal photooagution,the effective rate was 142 eyes(88.2%) in group of PPDR,36 eyes(65.5%) in group of high risk RDR.For those cases with remaining new vessels and non-perfusion areas,the treatment was complemented with further photocoagulation in 3 m after the first treatment.The cases with further photocoagulation were 19 eyes(11.8% )in group of PPDR,hut there were 15 eyes (9.3% )to develop to PDR.The cases with further photocoagulation were 35eye (63.6%) in group of PDR,there were 20 eyes(36.4%)to underwent vitrectomy.Conclusion The prognosis of diabetic retinopathy of different staging is different after panreteinal photocoagulation.It's very important to choice suitable occasion and reasonable parameters for panretinal photocoagulation for patients with diabetic retinopathy to ensuee visual acuity maintaining. Key words: Panreteinal photocoagulation; Diabetic retinopathy
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