1. University of Bonn, Department of Ophthalmology, Bonn, Germany
2. University of Bonn, Center for Rare Diseases Bonn (ZSEB), Bonn, Germany
3. Moorfields Eye Hospital NHS Foundation Trust, London, UK
4. Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
5. University of Oxford, Nuffield Laboratory of Ophthalmology, Department of Clinical Neurosciences, Oxford, UK