[1] Univ Elect Sci & Technol China, Sichuan Prov Peoples Hosp, Dept Ophthalmol, Chengdu 610072, Sichuan, Peoples R China
[2] Chengdu Tianfu New Dist Peoples Hosp, Dept Ophthalmol, Chengdu 641400, Sichuan, Peoples R China
[3] Sichuan Univ, West China Hosp, Dept Ophthalmol, Address 37,Guo Xue Lane, Chengdu 610041, Sichuan, Peoples R China