4Early Treatment Diabetic Retinopathy Study Report No.1.Arch Ophtalmol,1985,103:1796~1806
5Early Treatment Diabetic Retiopathy Study Group.Ophthalmology,1991,98:766
6周炜,郭希让主编.眼科激光治疗学.郑州:河南医科大学出版社,1998,279
7张承芬主编.眼底病学.北京:人民卫生出版社,1998,701
8Diabetic Rctiopathy Study Research Group.Photocoagulation treatment of proliferative diabetic retiopathy study(DRS)findings.DRS Report Number 8.Ophthalmology,1981,88:583~660
9Ferris F.Early photocoagulation in patients with either type I or type II diabetes.Trans Am Ophthalmol Soc,1996,94:505~537
10Fong D S,Ferris FL,Davis MD,et al.Causes of severe visual loss in the earlytreatment diabetic retinopathy study:ETDRS Report No.24.Early Treatment Diabetic Retiopathy Study Group.Am J Ophthalmol,1999,127(2):137~141