Visual discomfort and glare assessment in office environments: A review of light-induced physiological and perceptual responses

Hamedani, Zahra; Solgi, Ebrahim; Skates, Henry; Hine, Trevor John; Fernando, Ruwan; Lyons, Joshua; Dupré, Karine

doi:10.1016/j.buildenv.2019.02.035

Cited by 73 publications

(52 citation statements)

References 90 publications

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“…Either the light condition is labeled or the light condition is adjusted to reach a predefined label. Subjective scale is widely used [36,37], but other objective measurements such as pupil size can also be used [11].…”

Section: Discomfort Glare Evaluation Methodologymentioning

confidence: 99%

“…A review of different methodologies that explored physiological measurement of discomfort glare was published in 2019 by Hamedani et al [11] Absolute pupil size seems to be more linked to background illumination rather than discomfort, with reported significant correlations between pupil size and discomfort rating [38,39], but weak correlations (r2 < 0.5). Relative pupil size seems more of interest as it takes into account baseline pupil size but correlations are similar (r2 = 0.43) [40].…”

Section: Objective Measurements Of Discomfort Glarementioning

confidence: 99%

“…These indexes are useful for creating comfortable lighting environments for a population but do not ensure selfperceived comfort of an individual [10]. Studies on physiological parameters that can affect discomfort [10] or as an indicator of discomfort [11] in medicine explored photophobia, that is an extreme condition of discomfort glare. With photophobia, normal light levels produce or increase pain [12,13], and is often associated with neurological disorders like migraine or brain injury [14,15], ophthalmic disease [16] (dry eyes or retina pathology), or as a secondary effect of drugs [15].…”

Section: Introductionmentioning

confidence: 99%

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Performance of a new device for the clinical determination of light discomfort

Montés‐Micó

Cerviño

Martínez-Albert

et al. 2020

Expert Review of Medical Devices

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Purpose: To assess the performance of a new device for the clinical determination of light discomfort on a large sample of healthy human subjects. Methods: A total of 489 subjects ranging from 20 to 70 years old (241 men, 248 women) were evaluated with the LUMIZ™ 100 to determine light discomfort. Repeatability was assessed by means of within-subject standard deviation, coefficient of variation (CoV), and intraclass correlation coefficient (ICC). Repeated measures ANOVA, Kruskal-Wallis, and correlation analysis were applied to test for differences between repeated measures, and effect of age on reliability. Results: Discomfort thresholds obtained are well distributed across the light intensity range available (25 to 10211 lux). Intrasession ICCs are higher than 0.849 for all thresholds, and 85% of CoV are below 10%. Thresholds obtained in the first set of measurements are highly correlated with the median of three sets (r2 > 0.8). Intersession, 64% of CoV are below 10%. Age does not affect discomfort thresholds (p = 0.30), nor affect reliability (variance on CoV, p = 0.368) Conclusions: The new device provides good intrasession repeatability for the clinical determination of light discomfort thresholds, although variance is slightly greater between sessions. The system is useful for the clinical determination of light discomfort.

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Section: Discomfort Glare Evaluation Methodologymentioning

confidence: 99%

Section: Objective Measurements Of Discomfort Glarementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance of a new device for the clinical determination of light discomfort

Montés‐Micó

Cerviño

Martínez-Albert

et al. 2020

Expert Review of Medical Devices

View full text Add to dashboard Cite

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“…Therefore, today we are aware of the impact of natural light on people [ 43 ], and of its many benefits. Among them, natural lighting prevents the development of bacteria that cause respiratory effects and that find the best conditions for reproduction in the dark.…”

Section: Medicine Vs Architecture/health Vs Habitability/human Wmentioning

confidence: 99%

Health and Habitability in the Solar Decathlon University Competitions: Statistical Quantification and Real Influence on Comfort Conditions

Herrera-Limones

Millán-Jiménez

López-Escamilla

et al. 2020

IJERPH

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Medicine and architecture are disciplines with the main objectives of satisfying the fundamental needs of human beings: health, comfort, well-being, safety, and ensuring an acceptable quality of life in a sustainable habitat. In both areas of knowledge, the advances and the most innovative proposals in the fields of research and teaching are focused on transversal knowledge and the use of learning methods through problem solving (learning by doing). The student competitions called “Solar Decathlon” are focused on the development of these concepts, in which prototypes of sustainable and, as far as possible, healthy social housing are tested. In these university competitions, the design of energy-efficient and comfortable living environments that contribute to the health of the occupants are encouraged; however, the methodology for evaluating the “comfort conditions” stipulated in the competition rules considers only parameters that can be monitored by sensors. For this article, the prototypes presented by the “Solar Decathlon Team of the University of Seville” to the editions of said competition held in Latin America and Europe (in 2015 and 2019, respectively) are being studied. The present research starts from the fact that the unique consideration of measurable indices (such as temperature, humidity, etc.), is clearly insufficient when it comes to evaluating the real conditions of habitability and comfort that a domestic architectural space presents. For this reason, a theoretical–practical analysis is carried out by means of surveys, with the final objective of determining a methodology for evaluating comfort—complementary to that of the competition—which assesses other relevant issues and which, in short, takes into account the repercussion on people’s health. From our analysis, we conclude that at least these two methodologies should be used to evaluate comfort because they are individually considered incomplete in terms of the data provided by each one of them. The survey-based methodology provides complementary information on comfort and health that could be taken into account in future editions of Solar Decathlon.

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“…As principais causas de desconforto são geralmente relacionadas à incapacidade de o sistema visual se adaptar às condições dinâmicas e direcionais do brilho dos componentes da cena, podendo gerar diferentes padrões comportamentais (WIENOLD;CHRISTOFFERSEN, 2006), os quais são difíceis de ser definidos. As reações do sistema visual às condições de iluminação têm sido alvo de estudos que propõem modelos para a inclusão das sensações visuais nos índices usados na avaliação do ofuscamento (CHOI;ZHU, 2015;HAMEDANI et al, 2019HAMEDANI et al, , 2020HOWARTH et al, 1993;STONE, 2009;SWEITZER;SAITO, 1995;YAMIN GARRETÓN et al, 2015). Em um estudo inicial, Howarth et al (1993) não encontraram relação entre a variação no tamanho da pupila e a sensação de desconforto; porém, estudos posteriores afirmaram que a dita variação é sim um indicador de conforto visual (CHOI;ZHU, 2015;SWEITZER;SAITO, 1995).…”

Section: Introductionunclassified

Análise da influência do tempo e da trajetória do olhar na probabilidade de ofuscamento em ambientes de escritório

2020

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Resumo Quantificar e caracterizar a percepção do brilho na atividade visual ainda é um desafio nas pesquisas, por se tratar de um parâmetro relativo à posição ativa do ocupante. O objetivo desta pesquisa foi considerar o usuário dinâmico em ambientes de trabalho, verificando a influência do tempo de visualização e da direção do olhar na redução da probabilidade de ofuscamento. Os dados foram levantados em um ambiente real com 26 participantes, monitorados enquanto realizaram atividades comuns em escritórios. As movimentações do olhar foram registradas usando óculos eye-tracker. Através de imagens high dynamic range (HDR) foram mapeados os brilhos das superfícies e obtida a probabilidade de ofuscamento (DGP). Esses dados foram correlacionados com as respostas de satisfação dos usuários, obtida por meio de questionários. Constatou-se que, ao realizar uma tarefa, o usuário mantém seu olhar fixo no plano de trabalho e, durante períodos de pausa, o olhar tornou-se mais disperso. As aberturas foram visualizadas, principalmente, quando localizadas no plano de fundo da tarefa ou quando suas luminâncias foram menores. Concluiu-se que os valores de DGP ponderado estiveram mais próximos dos votos de satisfação manifestados pelos participantes, ressaltando a importância de considerar as direções de visão e o tempo de visualização nesta avaliação.

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Visual discomfort and glare assessment in office environments: A review of light-induced physiological and perceptual responses

Cited by 73 publications

References 90 publications

Performance of a new device for the clinical determination of light discomfort

Performance of a new device for the clinical determination of light discomfort

Health and Habitability in the Solar Decathlon University Competitions: Statistical Quantification and Real Influence on Comfort Conditions

Análise da influência do tempo e da trajetória do olhar na probabilidade de ofuscamento em ambientes de escritório

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