1. Department of Ophthalmology and Visual Sciences Prince of Wales Hospital, Hong Kong Special Administrative Region Kowloon China
2. Department of Ophthalmology and Visual Sciences Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region Hong Kong China
3. Department of Ophthalmology Tung Wah Eastern Hospital, Hong Kong Special Administrative Region China
4. Department of Ophthalmology Hong Kong Sanatorium & Hospital, Hong Kong Special Administrative Region China
5. Department of Ophthalmology Caritas Medical Center, Hong Kong Special Administrative Region China
6. Department of Ophthalmology United Christian Hospital, Hong Kong Special Administrative Region China
7. Department of Ophthalmology Tuen Mun Hospital, Hong Kong Special Administrative Region China
8. Hong Kong Eye Hospital, Hong Kong Special Administrative Region China
9. Eye Center The Chinese University of Hong Kong Medical Centre, Hong Kong Special Administrative Region Hong Kong China