Regarding to this problem, the polarized glasses have a built-in, laminated filter that permits only vertical light rays to pass through, and almost totally blocks horizontal rays to eliminate glares. This is most noticeable when boating or fishing, since you can suddenly see through the surface, which was previously clouded by the reflections from the sun and sky above.However, regular tinted sun lenses indiscriminately filter all light whether it is horizontal or vertical. Glare is dampened, but not eliminated. More importantly, by filtering all components of light, visual acuity is diminished.