Testing by a laboratory grade spectrometer has shown that the BlockBlueLight SunDown Amber lens blocks 99% of blue light from 380-500nm and 43% of Green light from 500-550nm.
The Nocturnal Ultra Red lens blocks 99% of blue light from 380-500nm, and 99% of green light from 500-570nm
Research shows that blue light between 400 and 450nm causes macular degeneration, retina damage, and can also be responsible for causing migraines and headaches through eye strain. Blue and green light between 450 and 550nm will have a very strong effect on suppressing the production of melatonin which in turn causes sleep issues.
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