Bifocal lenses are the all-in-one solution for correcting vision up-close and at-distance. A bifocal lens features two lens powers, divided by a line in the middle. This means a pair of bifocal glasses corrects both nearsightedness (myopia) and farsightedness (hyperopia) by changing the way light rays bend into the eyes. A big perk of bifocals is that this dual-correction means you’ll always have the right pair of glasses at hand. No matter if you want to read a book or drive a car: bifocals have got you - and your vision needs - covered. Bifocal lenses and bifocal reading glasses not only allow you to see clearly at any distance, but also alleviate eye strain, squinting, eye fatigue, and headaches: all symptoms associated with uncorrected nearsightedness and farsightedness. A bifocal prescription may seem slightly more complicated than a single focal prescription, but once you know the most important terms - it’s surprisingly easy to read. The main part of the prescription (the sphere, cylinder, and Axis values) refers to the correction for distance. Then there’s an additional value for ADD: the required strength for the near prescription correction in the bottom half of your bifocals/progressive lenses. When you shop for bifocal glasses online at 39DollarGlasses, entering your Rx prescription manually is quick and straightforward. We also give you the option to upload a picture of your Rx prescription, which makes buying your bifocals even easier. If you want an all-in-one solution that makes switching between different strength prescription glasses a thing of the past, choose the convenience and comfort of bifocal lenses via 39DollarGlasses!