1Early Treatment Diabetic Retinopathy Study Research Group.Early photocoagulation for diabetic retinopathy:ETDRS report number 9[J].Ophthalmology,1991,98:766-785.
2Masmiquel L,Rosa B,Carlos M,et al.Effert of panretinal pho-tocoagulation on serum levels of laminin in pat ients with dia-betes[J].Br J ophthalmol,1999,83(2):1056-1059.