WHAT IS UV420?

UV420 is blue light coming from sources such as LCD Monitors, Mobile phones and Tablets.  UV light and other forms of high-energy light come not just from sunny skies but also from cloudy, rainy skies and even reflected light.  

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Short-term exposure to UV rays can cause photo-keratitis, being sunburn of the eye.  Over a period of time, it can lead to cataracts.  Sunlight is made up in part of high-energy visible light (HEV light) which is known to potentially cause Age-related Macular Degeneration (AMD) as we get older.  

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What is the benefits of UV 420 photochromic lens? 

Photochromic lens with UV 420 protection has addition benefits where it  protects the eyes from harmful effects of the sun with a broad-spectrum of UVA and UVB protection plus it is nearly clear indoors and darken automatically when exposed to sunlight. 

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