1. Royal Free London Hospital NHS Foundation Trust, London, UK
2. Department of Ophthalmology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
3. Department for BioMedical Research, University of Bern, Bern, Switzerland
4. Bern Photographic Reading Center, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
5. Moorfields Eye Hospital NHS Foundation Trust, London, UK