9Keenan TD, Johnston RL, Donachie PH, et al. United Kingdom National Ophthalmology Database Study: Diabetic Retinopathy; Report 1 :prevalence of centre - involving diabetic macular oedema and other grades of maeulopathy andretinopathy in hospital eye services [ J ]. Eye (Lond) ,2013,20(10) : 196.
10Ramavat PR, Ramavat MR, Ghugare BW, et al. Prevalence of dia- betic retinopathy in western Indian Type 2 diabetic population: A hospital - based cross - sectional study [ J ]. J Clin Diagn Res, 2013,7(7) :1387 - 1390.
