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Evaluation of Two Strategies for Alleviating the Impact on the Circadian Cycle of Smartphone Screens / Emiliano Teran in OVS : Optometry & Vision Science, vol. 97, 03 (mars 2020)
[article]
in OVS : Optometry & Vision Science > vol. 97, 03 (mars 2020)
Titre : Evaluation of Two Strategies for Alleviating the Impact on the Circadian Cycle of Smartphone Screens Type de document : article de périodique Auteurs : Emiliano Teran ; Cristo-Manuel Yee-Rendon ; Jesus Ortega-Salazar ; Pablo De Gracia ; Efrain Garcia-Romo ; Russell L. Woods Année de publication : 2020 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus HELB]:Optique:Lumière bleue / optique
[Thésaurus HELB]:Paramédical:écrans et santé
[Thésaurus HELB]:Paramédical:smartphone
[Thésaurus HELB]:Photographie:oeil de verre
[Thésaurus Mesh]Dispositifs de protection des yeux
[Thésaurus Mesh]Effets indésirables à long terme
[Thésaurus Mesh]Rythme circadien
[Thésaurus Mesh]SommeilRésumé : SIGNIFICANCE: Electronic display devices used before bed may negatively affect sleep quality through the effects of short-wavelength (blue) light on melatonin production and the circadian cycle. We quantified the efficacy of night-mode functions and blue-light–reducing lenses in ameliorating this problem. PURPOSE: The purpose of this study was to compare the radiation produced by smartphones that reaches the eye when using night-mode functions or blue-light–reducing spectacle lenses. METHODS: Radiant flux of 64 smartphones was measured with an integrating sphere. The retinal illuminance was calculated from the radiant flux of the smartphones. For the night-mode functions, the spectra produced by the smartphones were measured. The transmittance of four blue-light–reducing spectacle lenses, which filter light with either antireflective coatings or tints, was measured using a spectrometer. To determine the impact of bluelight–reducing spectacles, the radiant flux of the smartphone was weighted by the transmission spectrum of these glasses. Visual and nonvisual (circadian) parameters were calculated to compute the melatonin suppression values (MSVs) through a logistic fitting of previously published data. The MSV was used as the figure of merit to evaluate the performance of blue-light spectacles and smartphone night-mode functions. RESULTS: Night-mode functions in smartphones reduced MSVs by up to 93%. The warmest mode produced the least suppression. Blue-light–reducing spectacles reduced melatonin suppression by 33%, the coated lenses being more efficient than tinted lenses. CONCLUSIONS: All smartphones in this study emit radiant power in the short-wavelength region of the visible spectrum. Such smartphones may impair the regulation of circadian cycles at nighttime. The activation of nightmode functions was more efficient than the commercially available blue-light–reducing spectacle lenses in reducing the amount of short-wavelength light (up to 2.25 times). These results can be extrapolated to most electronic devices because they share the same type of white radiant sources with smartphones. En ligne : https://journals.lww.com/optvissci/Fulltext/2020/03000/Evaluation_of_Two_Strateg [...] Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Points forts in Clichés (n'est plus suivi), 10 (Janvier 1984)
[article]
in Clichés (n'est plus suivi) > 10 (Janvier 1984) . - 4
Titre : Points forts Type de document : article de périodique Article en page(s) : 4 Descripteurs (mots clés) : [Thésaurus HELB]:Photographie:oeil de verre
[Thésaurus HELB]:Photographie:photographie de la rue et des gens
[Thésaurus HELB]:Photographie:photographie de paysages
[Thésaurus HELB]:Photographie:photographie en noir et blanc
[Thésaurus HELB]:Photographie:poisson
[Thésaurus personnes/collectivités]Bayer, Herbert
[Thésaurus personnes/collectivités]Bridges, Marilyn
[Thésaurus personnes/collectivités]Seidenstücker, FriedrichMots-clés : noir & blanc paysage gens rue oeil de verre poisson Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité Périodique Reyers - périodiques Périodiques Disponible