POLARIZED lenses are lenses that filter glare. From the moment of reflection, light becomes polarized and forms visual noise-blinding glare that interferes with the real image. The only way to eliminate this glare is to place polarized lenses in its path. By blocking glare, vision becomes more enhanced, colorful, and contrast is at its best.
SCRATCH COAT is a transparent coat that is applied to the surface of CR-39. This protects the lens material from scratching. The coating can be scratched if not properly cleaned, however scratches are not as visible.
UV-400 is a protective coating that can be applied to your lenses. It filters harmful UV rays that can lead to damage to the eye.
ANTI-REFLECTIVE coatings improve transparency and minimize reflections on the surfaces of the lenses. Lenses become almost invisible when treated with anti-reflective coats. Night vision is sharper and in greater detail without reflections, which improves visibility while driving.
SOLID TINT is added primarily for reducing light transmission through a lens. This can be applied to almost all lenses. Whether it be sunglass lenses, computer lenses, or shooting lenses there is a certain color of tint that is suitable for your needs.
There's more to lenses than meets the eye. 
