About the Authors

Sveinn Hakon Hardarson

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

sveinnha@hi.is

Affiliation Institute of Physiology, Department of Medicine, University of Iceland, Reykjavik, Iceland

Einar Stefánsson

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

Affiliations Institute of Physiology, Department of Medicine, University of Iceland, Reykjavik, Iceland, Department of Ophthalmology, Landspitali University Hospital, Reykjavik, Iceland

Toke Bek

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

Affiliation Department of Ophthalmology, Aarhus University Hospital, Aarhus N, Denmark

Competing Interests

Sveinn Hakon Hardarson and Einar Stefánsson have commercial interest in the company Oxymap ehf. They have stock in the company, are on its board and are listed on two patents related to retinal oximetry (Automatic registration of images US 7774036 B2, Temporal oximeter WO 2010143208 A3). This does not alter our adherence to PLOS ONE policies on sharing data and materials