Lauren K Hess1, Graham A Lee1,2,3,4, Peter Shah4,5,6. 1. City Eye Centre, Brisbane, Queensland, Australia. 2. University of Queensland, Brisbane, Queensland, Australia. 3. Mater Health Services, Brisbane, Queensland, Australia. 4. Birmingham Institute for Glaucoma Research, Institute for Translational Medicine, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK. 5. Institute of Ophthalmology, University College London, London, UK. 6. Centre for Health and Social Care Improvement, University of Wolverhampton, Wolverhampton, UK.