About the Authors

Bethany E. Higgins

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

Affiliation Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom

Deanna J. Taylor

Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – review & editing

Affiliation Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom

Wei Bi

Roles Methodology, Resources, Software

Affiliation Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom

Alison M. Binns

Roles Project administration, Supervision, Validation, Visualization, Writing – review & editing

Affiliation Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom

David P. Crabb

Roles Conceptualization, Funding acquisition, Methodology, Project administration, Supervision, Validation, Writing – review & editing

David.Crabb.1@city.ac.uk

Affiliation Optometry and Visual Sciences, School of Health Sciences, University of London, London, United Kingdom

Competing Interests

DPC is a consultant for Centervue and reports unrestricted grants from Roche UK, Santen UK, and Allergan UK and speaker fees from THEA, Bayer, Santen, and Allergan which are outside the submitted work. This study was funded as part of an unrestricted investigator-initiated research grant from Roche Products Ltd, UK, (https://www.roche.co.uk/) awarded to DPC. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. This does not alter our adherence to PLOS ONE policies on sharing data and materials. The remaining authors report no competing interests.