5 Eye Unit, Kings College Hospital, London, SE5 9RS, UK.
6 Moorfields Eye Hospital, City Road, London, EC1V 2PD, UK.
7 Ophthalmology Department, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, B15 2TH, UK. soozmollan@doctors.org.uk.
8 INSIGHT Health Data Research Hub for Eye Health, University Hospitals Birmingham NHS Foundation Trust, Birmingham, B15 2TH, UK. soozmollan@doctors.org.uk.
9 Transitional Brain Science, Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, B15 2TT, UK. soozmollan@doctors.org.uk.