1. Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, Jilin 130041, P.R. China
2. Department of Ophthalmology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
3. Department of Ophthalmology, The Fifth Affiliated Hospital, Sun Yet‑sen University, Zhuhai, Guangzhou, Guangdong 519000, P.R. China