Summary
This paper explores how the location of intrinsically photosensitive retinal ganglion cells (ipRGCs) on the retina affects their sensitivity to light, with evidence suggesting higher sensitivity in the lower retina (corresponding to light from above). Findings have practical implications for optimizing luminaire and light source placement to maximize circadian stimulation in lighting design.
Key Findings
- ipRGCs in the lower part of the retina (receiving light from above) appear to have higher sensitivity, suggesting that overhead lighting may be more effective for non-image-forming circadian effects.
- The concept of an optimal 'NIF super seat' implies that viewing angle and light source position relative to the observer significantly influence circadian light exposure.
Categories
The Science of Light: Investigates spatial sensitivity of ipRGCs on the retina and implications for non-image-forming (NIF) photoreception based on viewing position.
Author(s)
N Eichbrett, K Broszio, S Völker
Publication Year
2019
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