About the Authors

Tsz Wing Leung

Contributed equally to this work with: Tsz Wing Leung, Roger Wing-hong Li, Chea-su Kee

jeffrey.TW.leung@polyu.edu.hk

Affiliation School of Optometry, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR

Roger Wing-hong Li

Contributed equally to this work with: Tsz Wing Leung, Roger Wing-hong Li, Chea-su Kee

Affiliation School of Optometry, University of California, Berkeley, California, United States of America

Chea-su Kee

Contributed equally to this work with: Tsz Wing Leung, Roger Wing-hong Li, Chea-su Kee

Affiliation School of Optometry, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR

Competing Interests

Financial support for research: Salary for a research assistant, blue-light filtering spectacle lenses. Employment: The research assistant was employed by Hong Kong PolyU; None of the authors/ research personal was employed by the company. Consultancy: Part of the funding was charged as consulting fee Stocks, shares or ownership of company: None. Patents: None. Products in development: None. Marketed products: None. Royalties: None. We confirm that this does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptualization: TWL RL CK. Data curation: TWL. Formal analysis: TWL RL CK. Funding acquisition: CK. Investigation: TWL. Methodology: TWL CK. Project administration: TWL CK. Resources: TWL. Validation: TWL RL CK. Visualization: TWL. Writing – original draft: TWL. Writing – review & editing: TWL RL CK.