1. From the Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom; 2NIHR Biomedical Research Centre for Ophthalmology, Moorfields Eye Hospital and UCL Institute of Ophthalmology, London, United Kingdom;
2. Department of Ophthalmology, Norfolk and Norwich University Hospital, Norwich, United Kingdom; and
3. From the Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom;
4. NIHR Biomedical Research Centre for Ophthalmology, Moorfields Eye Hospital and UCL Institute of Ophthalmology, London, United Kingdom;
5. MRC (Medical Research Council) Epidemiology Unit, Institute of Metabolic Science, Addenbrookes Hospital, Cambridge, United Kingdom.