CoolBlue Optics Lab Test Results
Our glasses have been lab tested for transmittance % of blue light through our lenses at wavelength intervals from 780nm-290nm.
The results showed that our glasses block virtually 100% of the harmful part of the spectrum from 290nm to 415nm (UVA and UVB). These are the HEV (High Energy Visible Light) frequencies that are linked with Macular Degeneration.
From there it gradually tapers off to 70% at 420nm, 50% at 425nm, 35% at 430nm and so on. These are the more mellow frequencies of blue light that we take into our eyes on a daily basis as a natural part of regulating our energy levels and alertness in the day time, so we want to let some of that light in.
How much "Blue Light" do they block? Roughly 50% of the total blue spectrum if you take into account the transmittance % at each nanometer interval. This is the industry standard for clear blue light-blocking lenses. But most importantly, they block virtually 100% of macular degeneration-related light.