Polarized lenses in smart glasses serve to eliminate unpleasant glare caused by light reflecting off horizontal surfaces, such as a wet road, water surface, or a car dashboard. They function as an optical filter that blocks horizontally polarized light, which the human eye perceives as a dazzling glare. As a result, they provide clearer, sharper, and higher-contrast vision, which reduces eye strain. Colors also appear more saturated because they are not "overwhelmed" by white light from reflections. In smart glasses, this technology is designed to effectively reduce external glare while not hindering the readability of the glasses' integrated display. This is crucial because many digital screens, including the display in the glasses, emit polarized light themselves, and without proper alignment, the image could be invisible to the user.