Radcliffe Infirmary, Oxford & Royal Berkshire Hospital, Reading, Royal United Ho
2004 – International Clinical & Research Fellow to Professor Robert Weinreb, University of California San Diego
2005 – Glaucoma Fellow at Moorfields Eye Hospital, London
2005 – MD (University of London)
Consultant Ophthalmic Surgeon, Moorfields Eye Hospital Bedford – Clinical Lead for Glaucoma (from 2007)
Professor of Ophthalmology, Anglia Ruskin University, Cambridge (part-time from 2007)
Consultant Ophthalmic Surgeon, Huntingdon Glaucoma Diagnostic & Research Centre, Hinchingbrooke Hospital, Huntingdon, Cambridgeshire (from 2005)
Honorary Senior Lecturer, International Centre for Eye Health, London School of Hygiene & Tropical Medicine, London (from 2003)
Glaucoma – epidemiology, clinical management
Visual impairment and blindness – national surveys of eye disease (most recently Pakistan, Bangladesh)
Altitude research in ophthalmology
Cataract surgery