All lens materials block some light from passing through the lens. This light reflects back from the lens surface, causing distractions and reducing the clarity of night vision.

Conventional glass or plastic lenses reflect about 8 percent of the light that otherwise would reach the eye. High-index lenses reflect up to 50 percent more light than conventional glass or plastic lenses. However, when an anti-reflective lens coating (AR coating) is applied, high-index lenses transmit 99.5 percent of the light. And by allowing more light to enter the eye, AR coatings provide sharper night vision with less glare, a real advantage for night drivers.

Because AR coatings also eliminate lens reflections, they make high-index lenses appear even thinner. This is a big plus if you want to improve your appearance in eyeglasses.

To learn more go to: www.icoatcompany.com


Photochromic lenses are lenses that darken when exposed to UV radiation. Traditionally these lenses are known as “transition” lenses. These lenses darken substantially within one minute of UV exposure and will continue to darken slightly over the next few minutes. Once you are out of UV light radiation, the lenses will begin to clear immediately and are noticeably clearer in just a couple of minutes. The general time frame for photochromic lenses from darkest to clearest is between five to 15 minutes. Lenses of this type can be made from either glass or plastic.


Polarization is the process of restricting vibrations of light wholly or partially to one direction. This controls how the light will be reflected and therefore assists in clearer vision. Sunglass lenses that are polarized reduce glare from surfaces where a reflection may be present such as the window of the car driving in front of you, or a swimming pool.


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