1. Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Hospital, Tianjin 300020, PR China
2. Clinical College of Ophthalmology, Tianjin Medical University, Tianjin 300020, PR China
3. Nankai University Eye Institute, Nankai University Affiliated Eye Hospital, Nankai University, Tianjin 300020, China
4. National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300192, PR China