Subjective eye comfort and performance under the different combination of humidity, local air velocity and illuminance

Hitomi Tsutsumi, Yoshitaka Hoda, Shin Ichi Tanabe, Akiko Arishiro

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A subjective experiment was conducted using 15 college-aged subjects of both genders in order to evaluate their physiological and psychological reactions, performance and fatigue under the different combinations of indoor humidity, local air velocity and illuminance. The five-hour exposure periods were divided into three sections of 1.5 hours by 10-minute breaks. During each section, subjects performed 3 times of 20-minute task. During the exposure time subjects rated their sensations and visual fatigue, and measured their break up time (BUT) after each task. Local air velocity to subject's face had negative impact on subjective BUT, eye dryness, eye comfort sensation and visual fatigue. Shorter BUT and greater eye dryness sensation was found in low humidity air. Female subjects' BUT was shorter than male. The effects of subjective eye dryness and discomfort rated by females were greater than males. It was because of more contact lens use in female subjects. According to the relationship between BUT and subjective performance, in case that the subjective BUT gets shorter due to indoor environment, subjective performance would become lower.

Original languageEnglish
Title of host publicationIAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings
Subtitle of host publicationSustainable Built Environment
Pages193-200
Number of pages8
Publication statusPublished - 2007 Dec 1
Event6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007 - Sendai, Japan
Duration: 2007 Oct 282007 Oct 31

Publication series

NameIAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment
Volume1

Conference

Conference6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007
CountryJapan
CitySendai
Period07/10/2807/10/31

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Keywords

  • Eye comfort
  • Humidity
  • Illuminance
  • Local air velocity
  • Performance

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

Cite this

Tsutsumi, H., Hoda, Y., Tanabe, S. I., & Arishiro, A. (2007). Subjective eye comfort and performance under the different combination of humidity, local air velocity and illuminance. In IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment (pp. 193-200). (IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment; Vol. 1).