LENS MATERIALS |
Glass - still sometimes used but are heavy and can shatter. |
LENS DESIGNS |
Single Vision |
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Multifocal lenses enable the wearer to focus on both near and distance and, depending on the lens type, on middle distances as well, without removing his or her spectacles. |
OPTIONAL LENS TREATMENTS Scratch Resistant Coating Special hard coatings have been developed to help protect your eyewear from scratching and wear caused by normal, everyday use. |
Bifocal Lenses There are two distinct areas to a bifocal lens. In most cases the top portion is used for distance viewing and the lower portion for reading and other close work such as sewing. |
UV Protection This special treatment is available for plastic lenses to completely block hazardous UV light without visibly 'tinting' the lens. |
Trifocal Lenses There are three portions to a trifocal lens. The top, and usually the largest portion, is for distance; the middle section is for seeing at intermediate distances such as at arm's length; and the lowest part is for reading and other close work. |
Anti-Reflection Coatings Anti-reflective coatings enhance the appearance of eyewear by removing all distracting reflections. |
In progressive lenses, the lens power changes gradually from distance correction through the intermediate powers to the reading prescription at the bottom of the lens. |