Xiang-Yue Zheng1, De-Jin Cheng2, Li-Hua Lian1, Ru-Ting Zhang1, Xiao-Yi Yu3. 1. Department of Ophthalmology, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China. 2. Department of Nephrology, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China. 3. Department of Ophthalmology, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China. yxy741107@126.com.