Study setting
EYE
This study will be carried out in four eye clinics across China, including (1) Zhongshan Ophthalmic Center (ZOC), Sun Yat-sen University; (2) Hainan Eye Hospital, Zhongshan Ophthalmic Center, Sun Yat-sen University (HNZOC); (3) the First Affiliated Hospital of Guangxi Medical University; and (4) Shenzhen Eye Hospital.