Technically, the glasses have a distance sensor embedded ... Bifocal or trifocal or progressive lenses are really just multiple sets of lenses squashed into a smaller form factor, and greatly ...

All lenses can be converted into sun or snow glasses and include two frames and removable arms that can be swapped out with the adjustable straps for a snug fit on the slopes. Goggins admits the ...

Shopping for prescription sunglasses is just as easy ... non-prescription, or reader lenses. Frames with progressive lenses ...

A progressive lens design is like a bi- or tri-focal lens in that it corrects ... You may want to consider Transitions photochromic lenses for your primary pair of glasses. They adjust automatically ...