Viewing distance and character size in the use of smartphones across the lifespan

• Laura Boccardo,

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

  Affiliations Department of Physics and Astronomy, School of Optics and Optometry, University of Florence, Sesto Fiorentino (FI), Italy, Institute for Research and Studies in Optics and Optometry (IRSOO), Vinci (FI), Italy

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• Massimo Gurioli,

  Roles Supervision, Writing – review & editing

  Affiliation Department of Physics and Astronomy, School of Optics and Optometry, University of Florence, Sesto Fiorentino (FI), Italy

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• Paolo Antonino Grasso

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

  * E-mail: paolo.grasso@unifi.it

  Affiliation Department of Physics and Astronomy, School of Optics and Optometry, University of Florence, Sesto Fiorentino (FI), Italy

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