WHAT ARE BIFOCALS?
Bifocal reading glasses are a convenient solution that eliminates the hassle of constantly putting on and removing standard single-vision readers. With these non-prescription bifocals, you can access a magnified segment at the bottom of the lens for reading. At the same time, the top portion remains clear and uncorrected to maintain your natural distance vision.
three distinct multifocal lens choices: lined Bifocals , Progressive (no-line) lenses , and Computer Progressives . We aim to give customers the flexibility to select the option that best suits their needs.
WHAT ARE LINED BIFOCAL LENSES?
Benjamin Franklin is often credited with inventing the bifocal lens. While some historians disagree, it’s generally accepted that he was among the first to wear the specially—designed glasses.
Bifocals are actually the combination of two different kinds of lenses. In reading glasses, the larger lens does not change what the wearer sees at all, while a second, smaller lens is inset and offers the magnification, or diopter strength.
Over time, technology has improved bifocal lenses, but the basic design remains the same. Most of the lens allows you to see the world normally, while a small crescent adds the reading strength you need, where you need it. Bifocals allow you to comfortably shift between reading and looking at something in the distance, such as watching a favorite show on your TV.
