LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision

Autores
Matesanz, Beatriz; Vicente, Eduardo; Barrionuevo, Pablo Alejandro; Mar, Santiago; Arranz, Isabel
Año de publicación
2021
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The increased of LED technology is becoming more prevalent in our society due to its high energy efficiency. LEDs present different correlated color temperature (CCT); however, there is no evidence on how it influences pupil size. Previous studies have found variations in pupil size with retinal illumination for a single illuminant in the foveal area, where cones? density is high. Therefore, this pilot study has been conducted to analyze the influence on pupil size of the CCT, luminance and age at a retinal eccentricity of 10°. A pupilometer installed in a two-channel Maxwellian view optical system was used and four subjects, two young and two older, participated in this experiment. Pupil measurements were performed for six background luminances ranging from 0.01 to 50 cd/m2 provided by LEDs with different CCT: 2700, 4000 and 6500 K. As for the results obtained, we have observed that the pupil diameter decreases with increasing luminance and is larger for young than for old subjects for the same background luminance. Regarding CCT, in both young and old subjects, and for all background luminances, CCT does not influence pupil diameter.We can conclude that in off-axis vision the pupil size decreases with the luminance value in a similar way as it does in fovea. Old subjects have smaller pupil diameters than younger subjects for all luminances and for all illuminants, regardless of the CCT. Moreover, the decrease in pupil size at photopic luminance, where photoreceptors are saturated, is predictably caused by excitation of melanopsin cells.
Fil: Matesanz, Beatriz. Universidad de Valladolid; España
Fil: Vicente, Eduardo. Universidad de Valladolid; España
Fil: Barrionuevo, Pablo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Investigación en Luz, Ambiente y Visión. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Investigación en Luz, Ambiente y Visión; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Luminotecnia, Luz y Visión; Argentina
Fil: Mar, Santiago. Universidad de Valladolid; España
Fil: Arranz, Isabel. Universidad de Valladolid; España
43rd European Conference on Visual Perception
Trieste
Italia
Universidad de Trieste
University of Padova
Universidad de Bamberg
Materia
CCT
LED
PUPIL
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/281642
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling LED illuminants: Effect of correlated color temperature on pupil size in off-axis visionMatesanz, BeatrizVicente, EduardoBarrionuevo, Pablo AlejandroMar, SantiagoArranz, IsabelCCTLEDPUPILhttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2The increased of LED technology is becoming more prevalent in our society due to its high energy efficiency. LEDs present different correlated color temperature (CCT); however, there is no evidence on how it influences pupil size. Previous studies have found variations in pupil size with retinal illumination for a single illuminant in the foveal area, where cones? density is high. Therefore, this pilot study has been conducted to analyze the influence on pupil size of the CCT, luminance and age at a retinal eccentricity of 10°. A pupilometer installed in a two-channel Maxwellian view optical system was used and four subjects, two young and two older, participated in this experiment. Pupil measurements were performed for six background luminances ranging from 0.01 to 50 cd/m2 provided by LEDs with different CCT: 2700, 4000 and 6500 K. As for the results obtained, we have observed that the pupil diameter decreases with increasing luminance and is larger for young than for old subjects for the same background luminance. Regarding CCT, in both young and old subjects, and for all background luminances, CCT does not influence pupil diameter.We can conclude that in off-axis vision the pupil size decreases with the luminance value in a similar way as it does in fovea. Old subjects have smaller pupil diameters than younger subjects for all luminances and for all illuminants, regardless of the CCT. Moreover, the decrease in pupil size at photopic luminance, where photoreceptors are saturated, is predictably caused by excitation of melanopsin cells.Fil: Matesanz, Beatriz. Universidad de Valladolid; EspañaFil: Vicente, Eduardo. Universidad de Valladolid; EspañaFil: Barrionuevo, Pablo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Investigación en Luz, Ambiente y Visión. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Investigación en Luz, Ambiente y Visión; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Luminotecnia, Luz y Visión; ArgentinaFil: Mar, Santiago. Universidad de Valladolid; EspañaFil: Arranz, Isabel. Universidad de Valladolid; España43rd European Conference on Visual PerceptionTriesteItaliaUniversidad de TriesteUniversity of PadovaUniversidad de BambergSAGE Publications2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectConferenciaJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/pdfhttp://hdl.handle.net/11336/281642LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision; 43rd European Conference on Visual Perception; Trieste; Italia; 2021; 73-740301-00661468-4233CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.sagepub.com/doi/10.1177/03010066211059887info:eu-repo/semantics/altIdentifier/doi/10.1177/03010066211059887Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-03-31T15:22:06Zoai:ri.conicet.gov.ar:11336/281642instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-03-31 15:22:07.217CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision
title LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision
spellingShingle LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision
Matesanz, Beatriz
CCT
LED
PUPIL
title_short LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision
title_full LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision
title_fullStr LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision
title_full_unstemmed LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision
title_sort LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision
dc.creator.none.fl_str_mv Matesanz, Beatriz
Vicente, Eduardo
Barrionuevo, Pablo Alejandro
Mar, Santiago
Arranz, Isabel
author Matesanz, Beatriz
author_facet Matesanz, Beatriz
Vicente, Eduardo
Barrionuevo, Pablo Alejandro
Mar, Santiago
Arranz, Isabel
author_role author
author2 Vicente, Eduardo
Barrionuevo, Pablo Alejandro
Mar, Santiago
Arranz, Isabel
author2_role author
author
author
author
dc.subject.none.fl_str_mv CCT
LED
PUPIL
topic CCT
LED
PUPIL
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The increased of LED technology is becoming more prevalent in our society due to its high energy efficiency. LEDs present different correlated color temperature (CCT); however, there is no evidence on how it influences pupil size. Previous studies have found variations in pupil size with retinal illumination for a single illuminant in the foveal area, where cones? density is high. Therefore, this pilot study has been conducted to analyze the influence on pupil size of the CCT, luminance and age at a retinal eccentricity of 10°. A pupilometer installed in a two-channel Maxwellian view optical system was used and four subjects, two young and two older, participated in this experiment. Pupil measurements were performed for six background luminances ranging from 0.01 to 50 cd/m2 provided by LEDs with different CCT: 2700, 4000 and 6500 K. As for the results obtained, we have observed that the pupil diameter decreases with increasing luminance and is larger for young than for old subjects for the same background luminance. Regarding CCT, in both young and old subjects, and for all background luminances, CCT does not influence pupil diameter.We can conclude that in off-axis vision the pupil size decreases with the luminance value in a similar way as it does in fovea. Old subjects have smaller pupil diameters than younger subjects for all luminances and for all illuminants, regardless of the CCT. Moreover, the decrease in pupil size at photopic luminance, where photoreceptors are saturated, is predictably caused by excitation of melanopsin cells.
Fil: Matesanz, Beatriz. Universidad de Valladolid; España
Fil: Vicente, Eduardo. Universidad de Valladolid; España
Fil: Barrionuevo, Pablo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Investigación en Luz, Ambiente y Visión. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Investigación en Luz, Ambiente y Visión; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Luminotecnia, Luz y Visión; Argentina
Fil: Mar, Santiago. Universidad de Valladolid; España
Fil: Arranz, Isabel. Universidad de Valladolid; España
43rd European Conference on Visual Perception
Trieste
Italia
Universidad de Trieste
University of Padova
Universidad de Bamberg
description The increased of LED technology is becoming more prevalent in our society due to its high energy efficiency. LEDs present different correlated color temperature (CCT); however, there is no evidence on how it influences pupil size. Previous studies have found variations in pupil size with retinal illumination for a single illuminant in the foveal area, where cones? density is high. Therefore, this pilot study has been conducted to analyze the influence on pupil size of the CCT, luminance and age at a retinal eccentricity of 10°. A pupilometer installed in a two-channel Maxwellian view optical system was used and four subjects, two young and two older, participated in this experiment. Pupil measurements were performed for six background luminances ranging from 0.01 to 50 cd/m2 provided by LEDs with different CCT: 2700, 4000 and 6500 K. As for the results obtained, we have observed that the pupil diameter decreases with increasing luminance and is larger for young than for old subjects for the same background luminance. Regarding CCT, in both young and old subjects, and for all background luminances, CCT does not influence pupil diameter.We can conclude that in off-axis vision the pupil size decreases with the luminance value in a similar way as it does in fovea. Old subjects have smaller pupil diameters than younger subjects for all luminances and for all illuminants, regardless of the CCT. Moreover, the decrease in pupil size at photopic luminance, where photoreceptors are saturated, is predictably caused by excitation of melanopsin cells.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
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dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/281642
LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision; 43rd European Conference on Visual Perception; Trieste; Italia; 2021; 73-74
0301-0066
1468-4233
CONICET Digital
CONICET
url http://hdl.handle.net/11336/281642
identifier_str_mv LED illuminants: Effect of correlated color temperature on pupil size in off-axis vision; 43rd European Conference on Visual Perception; Trieste; Italia; 2021; 73-74
0301-0066
1468-4233
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/doi/10.1177/03010066211059887
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dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv SAGE Publications
publisher.none.fl_str_mv SAGE Publications
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