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Changes in brightness perception with age

Authors: Preciado Olvera, Oscar Ulises; Martín, Andrés; Manzano, Eduardo Roberto; Hanselaer, Peter;

Changes in brightness perception with age

Abstract

It is estimated that in the next 35 years, the population aged 60 or more will grow 100% globally and, specifically, the Latin American region will be the fastest growing with an estimated increase of 140%. The age of people could affect the amount of light that reaches the retina regarding the spectral power distribution (SPD) of the light source. As we get older, the eye lens becomes yellower which, consequently, reduces the eye transmittance. However, this decrease in transmittance is not the same for all wavelengths along the visible spectrum. With aging, the transmittance for short-wavelengths becomes considerably lower while at longer wavelengths, the transmittance is practically independent of age.Understanding the influence of age on the perception of brightness of visual stimuli is an important issue for indoor and outdoor lighting. In particular, in order to design urban lighting specifications that support perceptions of security in urban environments, as well as to optimize light source technologies, one need to consider how elderly people will perceive the visual scene and the quality of lighting.The aim of this work is to evaluate how the perception of brightness is affected by the change in transmittance of the eye with age. For this purpose, two experiments of brightness matching were carried out with two groups of people of different ages (20-30 years and 65 years or more). Our results suggest that there is a significant difference in brightness perception between the two groups, specifically, older people show a decrease in brightness perception for light sources with high emission at short wavelengths.

Fil: Preciado Olvera, Oscar Ulises. 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: Manzano, Eduardo Roberto. 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: Martín, Andrés. 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

Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Instituto de Investigación en Luz, Ambiente y Visión

Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Luminotecnia, Luz y Visión

Fil: Hanselaer, Peter. University of Ghent; Bélgica

2º Taller Latinoamericano de Ciencias de la Visión

San Miguel de Tucumán

Argentina

Country
Argentina
Keywords

BRIGHTNESS PERCEPTION, EYE TRANSMITTANCE, EYE AGING, https://purl.org/becyt/ford/2.11, https://purl.org/becyt/ford/2

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green