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LENSES

LENS MATERIALS






Glass - still sometimes used but are heavy and can shatter.
Plastic (Hard Resin) - lighter than glass, best with anti scratch coating.
High Index Plastic - lighter, thinner and flatter lenses.
Polycarbonate - high impact resistance suitable for sport.
Photo Sensitive -glass photogrey extra and now plastic Transition III lenses.

LENS DESIGNS



Single Vision
Aspheric
Multifocal Lenses

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.
There are three main kinds of multifocal lenses:  bifocal, trifocal and progressive.


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.

Progressive Lenses

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.

For more about lenses visit the Sola Optical Web Site.

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