1. University Hospitals Sussex NHS Foundation Trust, Brighton, UK
2. Department of Ophthalmology, St. Thomas’ Hospital, London, UK
3. School of Life Course & Population Sciences, King’s College London, London, UK
4. University Hospitals Sussex NHS Foundation Trust, Sussex Eye Hospital, Eastern Road, Brighton, BN2 5BF, UK
5. Brighton & Sussex Medical School, University of Sussex, Falmer, Brighton, UK