petak, 14.01.2011.
Prescription Eyeglass Specialty Lenses
There are many different lenses that have been specially created for certain purposes and needs.An aspheric lens is one of the lightest weights of all lenses. They are available in bifocal or single vision eyeglasses. The Allyl Resin plastic lens is also very light in weight. They do not offer the protection from ultra violet rays that other lenses offer. The best lens on the market is the High index plastic lens. It offers the highest level of ultra violet ray protection. It is.
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