Table 2: Lighting scenarios presented to all 18 participants in a counterbalanced manner.

Lighting scenarios
EveningMorning

Dim Light Session<5 lux at the cornea from an incandescent light source<5 lux at the cornea from an incandescent light source
Light Session 140 lux(0.182 W/ )of long-wavelength, red light (λ max 630 nm)40 lux(0.401 W/ )of short-wavelength, blue light (λ max 470 nm)
Light Session 2<5 lux at the cornea from an incandescent light source40 lux(0.401 W/ )of short-wavelength, blue light (λ max 470 nm)