VARZAR Polarized Sunglasses for Men/Women-Night Vision Driving Glasses- Lightweight- Anti glare- UV400 protection

What are Polarized Lenses? Polarized lenses contain a laminated filter that allows only vertically oriented light to pass through. This blocks the horizontally oriented light so that glare is almost eliminated. Advantage of Polarized Lenses: ? Clearer vision, especially in bright light ? Increased contrast and minimal color distortion ? Reduced glare and reflection ? Reduced eyestrain What is UV and the Damage to Eyes? Ultraviolet (UV) rays are higher in energy and do not fall within the realm of visible light, Ultraviolet radiation is invisible. There are three categories of UV radiation: UVC: These are the highest energy UV rays and potentially could be the most harmful to your eyes and skin. UVC rays have wavelengths that range from 100 to 280 nm. UVB: UVB rays have slightly longer wavelengths (280-315 nm) and lower energy than UVC rays. Overexposure to the sun's UVB radiation may causes eye problems, including pinguecula, pterygium and photo keratitis ("snow blindness”). UVA: UVA rays are closer to visible light and have lower energy than UVB and UVC rays. But UVA rays can pass through the cornea and reach the lens and retina. Overexposure to UVA may cause certain types of cataracts, macular degeneration. Why Choose VARZAR Sunglasses? ? High-definition Polarized lenses ? Blocking 100% UV400 rays of UVA, UVB and UVC ? Lightweight, suitable for long time wearing during outdoor sports and activities ? Fashion and stylish design, TR90 and silicone two colors over-molding frame