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Table 2 Lighting conditions presented to subjects

From: Implications of controlled short-wavelength light exposure for sleep in older adults

Batch Irradiance
(μW/cm2)
Illuminance
(lux)
Peak wavelength
(nm)
FWHM
(nm)
Pupil diameter
(mm)
3 dark NA NA NA 5.5 (5.4 ± 0.51)
3 0.7 (0.7 ± 0.04) 0.61(0.6 ± 0.16) 473 (473 ± 0.4) 18 (18 ± 0.83) 5.3 (5.2 ± 0.52)
3 2.0 (2 ± 0.08) 1.2 (1.5 ± 0.37) 462 (467 ± 5.5) 18 (18 ± 0.29) 4.9 (4.8 ± 0.53)
2 6.1 (6 ± 0.2) 5.8 (6.8 ± 3.1) 474 (474 ± 0.3) 20 (20 ± 0.3) 4.2 (4.4 ± 0.61)
1 11 (11 ± 2.6) 11 (11 ± 1.6) 474 (474 ± 1.8) 20 (20 ± 0.5) 3.8 (4.1 ± 0.91)
2 20 (20 ± 0.4) 12 (14 ± 4.1) 462 (466 ± 5.9) 19 (19 ± 1.1) 3.8 (4.1 ± 0.87)
1 72 (74 ± 7.3) 66 (60 ± 17) 473 (469 ± 6.3) 20 (20 ± 1.5) 3.4 (3.4 ± 0.33)
  1. Medians and, in parentheses, means ± standard deviations of corneal irradiance, corneal illuminance, peak wavelength and full width at half maximum (FWHM) wavelength delivered by the blue-light goggles used in the experiment. Peak wavelengths vary slightly because different goggles were used to deliver the different light levels. Medians, means ± standard deviations of measured subject pupil diameter while wearing the blue-light goggles at the prescribed levels are also provided. Pupil areas and corneal irradiances or corneal illuminance levels were used to estimate retinal light doses. Melatonin concentrations in saliva and in plasma were assayed at different times as three different batches.