Eye Centre, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China;
Ophthalmic Centre, Zhongshan University, Guangzhou 510060, China;
Ophthalmic Centre, Zhongshan University, Guangzhou 510060, China;
Ophthalmic Centre, Zhongshan University, Guangzhou 510060, China;
Ophthalmic Centre, Zhongshan University, Guangzhou 510060, China;
Ophthalmic Centre, Zhongshan University, Guangzhou 510060, China;
Ophthalmic Centre, Zhongshan University, Guangzhou 510060, China;
electroretinogram; diabetic macular edema; vitrectomy; retinal function;