Chronobiological aspects of (day-) light on human physiology, behavior and visual comfort


Beyond vision, our eyes mediate non-visual effects of light including synchronization of physiological rhythms and behavior with the external light dark cycle. These non-visual processes are conveyed via retinal photo-receptors (e.g. rods and cones) as well as melanopsin containing retinal ganglion cells. Since we spend most of our time inside of buildings the quality and quantity of daily light we get through our eyes matters - not only for visual comfort but also for our health and wellbeing.




  • To test the acute, circadian and seasonal impacts of different light conditions on human physiology, behavior and visual comfort.
  • To foster knowledge for optimized lighting conditions in different healthy populations as well as in patients suffering from visual impairments and circadian rhythm disturbances.
  • To further elaborate an interdisciplinary approach to incorporate photobiological aspects of light in all aspects relevant for health and wellbeing.
  • To contribute to the development of new technologies related to chronobiological aspects of light conditions for different populations and patients.


See also:


“Changing perspectives on daylight: Science, technology, and culture” – a publication of the Daylight Academy