The effect of blue light filtering lenses on speed perception

Abstract Blue-light filtering lenses (BFLs) are marketed to protect the eyes from blue light that may be hazardous to the visual system. Because BFLs attenuate light, they reduce object contrast, which may impact visual behaviours such as the perception of object speed which reduces with contrast. I...

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Autores principales:	Adiba Ali, Maitreyee Roy, Hind Saeed Alzahrani, Sieu K. Khuu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a08d9d0d540c4279b6d20ef3c9b18180
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spelling	oai:doaj.org-article:a08d9d0d540c4279b6d20ef3c9b181802021-12-02T17:51:12ZThe effect of blue light filtering lenses on speed perception10.1038/s41598-021-96941-02045-2322https://doaj.org/article/a08d9d0d540c4279b6d20ef3c9b181802021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96941-0https://doaj.org/toc/2045-2322Abstract Blue-light filtering lenses (BFLs) are marketed to protect the eyes from blue light that may be hazardous to the visual system. Because BFLs attenuate light, they reduce object contrast, which may impact visual behaviours such as the perception of object speed which reduces with contrast. In the present study, we investigated whether speed perception is affected by BFLs. Using a two-interval forced-choice procedure in conjunction with Method of Constant Stimuli, participants (n = 20) judged whether the perceived speed of a moving test stimulus (1.5–4.5°/s) viewed through a BFL was faster than a reference stimulus (2.75°/s) viewed through a clear lens. This procedure was repeated for 3 different BFL brands and chromatic and achromatic stimuli. Psychometric function fits provided an estimate of the speed at which both test and reference stimuli were matched. We find that the perceived speed of both chromatic and achromatic test stimuli was reduced by 6 to 20% when viewed through BFLs, and lenses that attenuated the most blue-light produced the largest reductions in perceived speed. Our findings indicate that BFLs whilst may reduce exposure to hazardous blue light, have unintended consequences to important visual behaviours such as motion perception.Adiba AliMaitreyee RoyHind Saeed AlzahraniSieu K. KhuuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Adiba Ali Maitreyee Roy Hind Saeed Alzahrani Sieu K. Khuu The effect of blue light filtering lenses on speed perception
description	Abstract Blue-light filtering lenses (BFLs) are marketed to protect the eyes from blue light that may be hazardous to the visual system. Because BFLs attenuate light, they reduce object contrast, which may impact visual behaviours such as the perception of object speed which reduces with contrast. In the present study, we investigated whether speed perception is affected by BFLs. Using a two-interval forced-choice procedure in conjunction with Method of Constant Stimuli, participants (n = 20) judged whether the perceived speed of a moving test stimulus (1.5–4.5°/s) viewed through a BFL was faster than a reference stimulus (2.75°/s) viewed through a clear lens. This procedure was repeated for 3 different BFL brands and chromatic and achromatic stimuli. Psychometric function fits provided an estimate of the speed at which both test and reference stimuli were matched. We find that the perceived speed of both chromatic and achromatic test stimuli was reduced by 6 to 20% when viewed through BFLs, and lenses that attenuated the most blue-light produced the largest reductions in perceived speed. Our findings indicate that BFLs whilst may reduce exposure to hazardous blue light, have unintended consequences to important visual behaviours such as motion perception.
format	article
author	Adiba Ali Maitreyee Roy Hind Saeed Alzahrani Sieu K. Khuu
author_facet	Adiba Ali Maitreyee Roy Hind Saeed Alzahrani Sieu K. Khuu
author_sort	Adiba Ali
title	The effect of blue light filtering lenses on speed perception
title_short	The effect of blue light filtering lenses on speed perception
title_full	The effect of blue light filtering lenses on speed perception
title_fullStr	The effect of blue light filtering lenses on speed perception
title_full_unstemmed	The effect of blue light filtering lenses on speed perception
title_sort	effect of blue light filtering lenses on speed perception
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/a08d9d0d540c4279b6d20ef3c9b18180
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The effect of blue light filtering lenses on speed perception

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