About the Authors

Anvesh Annadanam

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

Affiliation Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

Varshini Varadaraj

Roles Data curation, Formal analysis, Supervision, Writing – original draft, Writing – review & editing

Affiliation Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

Lucy I. Mudie

Roles Conceptualization, Data curation, Formal analysis, Project administration, Resources, Writing – original draft, Writing – review & editing

Affiliation Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

Alice Liu

Roles Data curation, Resources, Writing – review & editing

Affiliation Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

William G. Plum

Roles Data curation, Methodology, Project administration, Resources, Writing – review & editing

Affiliation Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

J. Kevin White

Roles Conceptualization, Funding acquisition, Investigation, Project administration, Writing – review & editing

Affiliation Global Vision 2020, Easton, Maryland, United States of America

Megan E. Collins

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

Affiliation Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

David S. Friedman

Roles Conceptualization, Project administration, Resources, Supervision, Writing – review & editing

david.friedman@jhu.edu

Affiliation Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America

Competing Interests

Global Vision 2020 holds the patent (“Portable vision testing apparatus”, publication # WO2016122980 A1) for the USee refraction tool that was evaluated by the study described in this article. J. Kevin White is the founder of Global Vision 2020 and also serves as its Executive Director. This arrangement has been reviewed and approved by the Johns Hopkins University in accordance with its conflict of interest policies. This does not alter our adherence to PLOS ONE policies on sharing data and materials.