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dc.contributor.authorArgilés Sans, Marc
dc.contributor.authorCardona Torradeflot, Genís
dc.contributor.authorPérez Cabré, Elisabet
dc.contributor.authorPérez Magrané, Ramon
dc.contributor.authorMorcego Seix, Bernardo
dc.contributor.authorGispets Parcerisas, Joan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Òptica i Optometria
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial
dc.identifier.citationArgilés , M., Cardona, G., Pérez-Cabré, E., Perez, R., Morcego, B., Gispets, J. Real-Time Non-Intrusive Assessment of Viewing Distance During Computer Use. "Optometry and vision science", 22 Octubre 2016, vol. 93, núm. 12, p. 1525-1531.
dc.description.abstractPurpose: To develop and test the sensitivity of an ultrasound-based sensor to assess the viewing distance of visual display terminals operators in real-time conditions. Methods: A modified ultrasound sensor was attached to a computer display to assess viewing distance in real time. Sensor functionality was tested on a sample of 20 healthy participants while they conducted four 10-minute randomly presented typical computer tasks (a match-three puzzle game, a video documentary, a task requiring participants to complete a series of sentences, and a predefined internet search). Results: The ultrasound sensor offered good measurement repeatability. Game, text completion, and web search tasks were conducted at shorter viewing distances (54.4 cm [95% CI 51.3-57.5 cm], 54.5 cm [95% CI 51.1-58.0 cm], and 54.5 cm [95% CI 51.4-57.7 cm], respectively) than the video task (62.3 cm [95% CI 58.9-65.7 cm]). Statistically significant differences were found between the video task and the other three tasks (all p < 0.05). Range of viewing distances (from 22 to 27 cm) was similar for all tasks (F = 0.996; p = 0.413). Conclusions: Real-time assessment of the viewing distance of computer users with a non-intrusive ultrasonic device disclosed a task-dependent pattern. (C) 2016 American Academy of Optometry
dc.format.extent7 p.
dc.subjectÀrees temàtiques de la UPC::Ciències de la visió::Optometria
dc.titleReal-Time Non-Intrusive Assessment of Viewing Distance During Computer Use
dc.contributor.groupUniversitat Politècnica de Catalunya. GRCUV - Grup de Recerca del Centre Universitari de la Visió
dc.contributor.groupUniversitat Politècnica de Catalunya. GOAPI - Grup d'Òptica Aplicada i Processament d'Imatge
dc.contributor.groupUniversitat Politècnica de Catalunya. SAC - Sistemes Avançats de Control
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorArgilés, M.; Cardona, G.; Pérez-Cabré, E.; Perez, R.; Morcego, B.; Gispets, J.
upcommons.citation.publicationNameOptometry and vision science

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