Essilor just invented and launched Blue Blocker (Melanine) Polycarbonate lenses in the UK, a principle which I introduced in 1982-83 = 30 years ago.
.......with full UV and blue blocking features ...................and you can tint them yourselves
Discover melanin technology
Both UV rays and blue light are harmful to your eyes. Specifically, the blue light, also called High Energy Visible (HEV), increases the risk of premature retina ageing. For an intact vision, from your first baby steps and throughout life, use Essilor Airwear Prescription Melanin lenses and BNL Plano Non prescription Melanin lenses. Inspired by the natural defenses of the human body against the sun, our Melanin lenses filter both UV rays and blue light, while preserving color perception.
Melanin lenses are equivalent to a sun lotion with a SPF (Sun Protection Factor) superior to 140.
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see at ----------------->
http://www.bnl-eurolens.com/en/conte...nin-technology
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