We tried 23 online eyeglass retailers across various budgets and style offerings, and found four we recommend as the best ...

As a result, people require multiple sets of eyeglasses for different conditions. Bifocal or trifocal or progressive lenses are really ... whitepaper is available online and contains details ...

A progressive ... index lenses, can improve the comfort and cosmetic appearance of your lenses by allowing vision correction with a thinner and lighter lens. You may want to consider Transitions ...

enabling the wearer to adjust her focus depending on the distance from the object she is viewing—similar to bifocal or progressive-lens glasses. There are also contact lenses that can correct ...