Figures & data
Figure 1 Representation of photoreceptor thresholds, visual responses, and their relationship to the range of illumination from natural and artificial light sources.
Abbreviation: ipRGC, intrinsically photosensitive retinal ganglion cell.
![Figure 1 Representation of photoreceptor thresholds, visual responses, and their relationship to the range of illumination from natural and artificial light sources.](/cms/asset/2391ad7e-e480-421a-8808-9042c391ce1a/dnss_a_193902_f0001_c.jpg)
Figure 2 Actigram from a participant working day shifts (7 am–7 pm).
![Figure 2 Actigram from a participant working day shifts (7 am–7 pm).](/cms/asset/aa1add63-6653-40da-a9d6-792b3f00f3b2/dnss_a_193902_f0002_c.jpg)
Figure 3 Flowchart of response frequencies for the four light questions at BT and WT.
Abbreviations: BT, bedtime; WT, wake time; TALT, time above light threshold; TA10, TALT of lux.
![Figure 3 Flowchart of response frequencies for the four light questions at BT and WT.](/cms/asset/446b386f-77f6-4c11-9e66-9a15ed1441b5/dnss_a_193902_f0003_b.jpg)
Table 1 Reported light and photopic illumination (TA10)
Table 2 Reported light and objective sleep
Table 3 Reported light and subjective sleep
Table S1 Reported light and photopic illumination for day- and nightshift workers (TA10)
Table S2 Reported light and objective sleep (actigraphy) by shift type
Table S3 Reported light and subjective sleep (diary) by shift type