9Huang SS,Zheng YF,Foster PJ,et al.Prevalence and Causes of Visual Impairment in Chinese Adults in Urban Southern China.Arch Ophthalmol2009;127(10):1362-1367.
10Dedov I,Maslova O,Bolotskaia L,et al.Prevalence of Diabetic Retinopathy and Cataract in Adult Patients With Type1And Type2Diabetes in Russia.Rev Diabet Stud2009;6(2):124-129.