1. Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou 515041, China
2. School of Optometry, The Hong Kong Polytechnic University, Hong Kong SAR, China
3. Research Centre for SHARP Vision (RCSV), The Hong Kong Polytechnic University, Hong Kong SAR, China
4. Shantou University Medical College, Shantou 515041, China
5. Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China