This style features anti-fog technology that helps keep your lenses from fogging up.
25 - Unisex Round Blue Light Glasses in Tortoise by Foster Grant - Parker Anti-fog Readers - +1. The round-style frames are made from matte tortoise-pattern plastic.25 It also includes our patented blue light lens technology that helps reduce exposure to potentially harmful blue-violet light* from the sun and artificial sources, including digital devices. The lenses provide anti-fog benefits, help filter blue light, and are also scratch and impact resistant.