1. Birmingham and Midland Eye Centre, Birmingham
2. Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham
3. Academic Ophthalmology, School of Medicine, University of Nottingham, Nottingham, UK
4. Department of Anterior Segment and Refractive Surgery, Rothschild Foundation Hospital, Paris, France
5. Singapore National Eye Centre, Singapore Eye Research Institute
6. Duke-NUS Medical School, National University of Singapore, Singapore, Singapore