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Daylight

Light exposure for health and wellbeing

The discovery of intrinsically photoreceptive retinal ganglion cells (ipRGCs) in 2001 was a great leap forward in photobiology, and ignited strong interest in the possibility of using light exposure to improve health and well-being. CIE in 2004 promulgated five “principles of healthy lighting”, and proposed that these principles should lead to a renewed emphasis on architectural daylighting. This review focuses on application in residential buildings. This paper briefly reports on the review and summarizes the research questions that we think are most urgently in need of answers.

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