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SUBJECTIVE EYE COMFORT AND PERFORMANCE UNDER THE DIFFERENT COMBINATION OF HUMIDITY, LOCAL AIR VELOCITY AND ILLUMINANCE

Tsutsumi, H.; Hoda, Y.; Tanabe, S.; Arishiro, A., 2007
Eye Comfort | Local Air velocity | humidity | Illuminance | performance
Bibliographic info: The 6th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings IAQVEC 2007, Oct. 28 - 31 2007, Sendai, Japan
Languages: English

A subjective experiment was conducted using 15 college-aged subjects of both genders in order toevaluate their physiological and psychological reactions, performance and fatigue under the differentcombinations 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 subjectsrated their sensations and visual fatigue, and measured their break up time (BUT) after each task.Local air velocity to subjects face had negative impact on subjective BUT, eye dryness, eye comfortsensation and visual fatigue. Shorter BUT and greater eye dryness sensation was found in low humidityair. Female subjects BUT was shorter than male. The effects of subjective eye dryness and discomfortrated 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 subjectiveBUT gets shorter due to indoor environment, subjective performance would become lower.


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