About the Authors

Ian Murdoch

Contributed equally to this work with: Ian Murdoch, Andrew F. Smith, Helen Baker, Kazim Dhalla

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

i.murdoch@ucl.ac.uk

Affiliations Institute of Ophthalmology, University College, London, United Kingdom, Moorfield’s Eye Hospital, London, United Kingdom

Andrew F. Smith

Contributed equally to this work with: Ian Murdoch, Andrew F. Smith, Helen Baker, Kazim Dhalla

Roles Conceptualization, Formal analysis, Investigation, Methodology, Supervision, Writing – original draft, Writing – review & editing

Affiliations Department of Ophthalmology, King’s College London, London, United Kingdom, Medmetrics Inc., Ottawa, Canada

Helen Baker

Contributed equally to this work with: Ian Murdoch, Andrew F. Smith, Helen Baker, Kazim Dhalla

Roles Conceptualization, Data curation, Funding acquisition, Methodology, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Institute of Ophthalmology, University College, London, United Kingdom

Bernadetha Shilio

Roles Data curation, Resources, Writing – review & editing

Affiliation Ministry of Health, Community Development, Gender, Elderly and Children, National Eye Care Program, Dodoma, Tanzania, East Africa

Kazim Dhalla

Contributed equally to this work with: Ian Murdoch, Andrew F. Smith, Helen Baker, Kazim Dhalla

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Writing – original draft, Writing – review & editing

Affiliation Dr Agarwals Eye Hospital, Dar Es Salaam, Tanzania, East Africa

Competing Interests

Author AFS is a consultant to Medmetrics Inc and was a paid health economics consultant on this project. This does not alter our adherence to PLOS ONE policies on sharing data and materials. No other authors have any competing interests to declare.