Description PREVENT HARMFUL BLUE RADIATION: Blue light glasses can effectively block harmful blue radiation, electromagnetic wave radiation, and ultraviolet rays. Whether you use computers, laptops, or smartphones, the glasses can protect your eyes from harmful blue rays emitted from the screens. They protect your eyes from invisible harmful blue rays and help prevent computer vision syndrome (eyes lose focus, vision becomes blurry, fatigue, ophthalmic acid, bulging, etc.). REDUCE VISION-RELATED EYE STRAIN SYNDROME: By blocking the main harmful blue radiation, the glasses can protect your eyes from vision-related syndrome (eyes lose focus, vision becomes blurry, fatigue, ophthalmic acid, bulging, aches, etc.). You don't have to worry about damaging your eyes (getting myopia or vision impairment, or other vision-related syndrome), just enjoy your digital time. COMFORTABLE TO WEAR: The frame is very comfortable to wear and the light transmission of the lenses is very good. In addition, the casual frame design makes you look professional and fashionable when working or reading. 100% RISK-FREE AFTER-SALES GUARANTEE: If you have any questions or problems, please contact the seller without hesitation to solve the problem until you are satisfied.