Both of these more traditional types of glasses have telltale lines in the lenses. Progressives have a seamless look. Sometimes they're called "no-line bifocals," but that's not quite right.

In the past, you could spot this type of lens by the line between the two sections. But today’s products often look seamless. Bifocals. The most common type of multifocal. The lens is split into ...

In 1959, multifocal technology was revolutionized when French engineer Bernard Maitenaz invented the first progressive lens, the Varilux, and it was the first no-line bifocal of its kind.

Tell the attendant what you want--for example, high-index, progressive no-line bifocal with edge polish. Costco's prices are frequently significantly lower. Lenses that cost $400 at an optical ...

The original Bifocal Lenses In Nearsighted Kids (BLINK) Study showed that having children with myopia wear high-add power multifocal contact lenses slows its progression. Now, new results from the ...

Researchers have developed a new type of bifocal lens that offers a simple way to achieve two foci (or spots) with intensities that can be adjusted by applying external voltage. The lenses ...