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*VLT (VISIBLE LIGHT TRANSMISSION):

THE PERCENTAGE OF AVAILABLE LIGHT ALLOWED TO REACH THE EYE (THE LOWER THE NUMBER, THE DARKER THE LENS)

HAPPY LENS:

Happy Lens is the only color and contrast enhancing lens on the market that harnesses the beneficial aspects of long-wave blue light while offering protection from damaging short-wave blue light.
Long-wave blue light helps you See Better by enhancing color, contrast, and clarity, making colors more vivid and surroundings more defined.
Long-wave blue light helps you Feel Better by stimulating the brain’s production of serotonin to improve mood, increase alertness, and promote a healthy circadian rhythm.