Bifocals were reportedly created by Benjamin Franklin in 1779. The invention emerged when Franklin recognized the need for glasses that addressed multiple vision concerns.
Bifocals soon became a standard form of eyewear, but if you’re looking for prescription safety glasses, there are other options to consider, too. The most common alternative — progressive lenses — offer many of the same benefits as bifocals without visible lines that clearly indicate a transition.
Find out which kind of lenses are best for your needs and for your next pair of safety glasses in this infographic courtesy of Marveloptics.