Specifications: 1.74 Index Progressive Photochromic Polycarbonate Lenses
Coating: HC TCM UV400 EMI Anti-Blue Anti-Glare . They are not polarized.
Color: Photochromic Tea, Grey
The price on the page is for 1 pair (2 lenses)
Photochromic lenses are eyeglass lenses that are clear (or nearly clear) indoors and darken automatically when exposed to sunlight. An added benefit of photochromic lenses is that they shield your eyes from 100 percent of the sun's harmful UVA and UVB rays. It's a good idea to consider photochromic lenses for children's eyewear as well as for eyeglasses for adults Because a person's lifetime exposure to sunlight and UV radiation has been associated with cataracts later in life.
Blue light blocking glasses are made with lenses that block or filterout harmful blue rays that emit from computer screens on phones, laptops, computer screens and tablet screens. The lenses keep your eyes protected from glare and potentially reduce eye health problems the retina sustains during prolong exposure to blue light.
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