1 Department of Ophthalmology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, PR China. Electronic address: 840521@hrbmu.edu.cn.
2 Department of Ophthalmology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, PR China.
3 Optometry Clinic, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, PR China.