Fig. 1From: Effect of simultaneous exposure to extremely short pulses of blue and green light on human pupillary constrictionSpectral irradiance of light. Spectral irradiance of blue and green light-emitting diodes and blue plus green light of 15 μW/cm2. The light of 10 and 20 μW/cm2 irradiance had the same spectral propertiesBack to article page