Summary
This report provides expert consensus recommendations for lighting design based on melanopic EDI, a standardized metric for quantifying circadian-effective light exposure. The findings support optimizing light environments to promote sleep, neuroendocrine balance, and alertness, with particular relevance for populations whose non-visual light responses may differ from typical cone-mediated vision.
Key Findings
- An international SI-compliant standard for melanopic equivalent daylight illuminance (melanopic EDI) is recommended as the primary metric for specifying circadian-effective lighting.
- Expert consensus recommendations are provided for lighting levels based on analysis of human circadian, neuroendocrine, and alerting responses to ocular light.
- Studying individuals without cone-mediated vision helps isolate the role of melanopsin-expressing ipRGCs in mediating non-visual light responses.
Categories
Sleep & Circadian Health: Examines how ocular light exposure modulates circadian rhythms and sleep in people without cone-mediated vision, isolating melanopsin-driven effects.
The Science of Light: Discusses the international lighting standard and melanopic equivalent daylight illuminance (melanopic EDI) as a quantifiable metric for circadian-effective light.
Author(s)
M Spitschan, C Garbazza, S Kohl, C Cajochen
Publication Year
2020
Related Publications
Sleep & Circadian Health
- Phototransduction by retinal ganglion cells that set the circadian clock
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- The twoāprocess model of sleep regulation: a reappraisal
- Melanopsin is required for non-image-forming photic responses in blind mice
- Strange vision: ganglion cells as circadian photoreceptors
The Science of Light
- Phototransduction by retinal ganglion cells that set the circadian clock
- Color appearance models
- The mammalian circadian timing system: organization and coordination of central and peripheral clocks
- Diminished pupillary light reflex at high irradiances in melanopsin-knockout mice
- Melanopsin is required for non-image-forming photic responses in blind mice