The American gentleman of scientific discipline, Benjamin Franklin, who endured both nearsightedness as well as presbyopia, devised bifocals in 1784 to avoid needing to frequently switch betwixt two frames of eyeglasses.

The first lenses intended for repairing astigmia were constructed by the British astronomer George Airy in 1825.

Along the history of bifocal reading glasses, the development of pectacle frames also evolved. In early stages glasses were designed to be either held in place with your hand or by maintaining force on the nose. Girolamo Savonarola advised that oculars could be held in place with a ribbon placed over the subject’s head, which in turn was held secure by the weight of one’s hat.

Entering modern bifocal history, the contemporary fashion of bi-focal reading glasses supported by temples passing over the ears, was produced in 1727 by the British lens maker Edward Scarlett. These designs were not at once prosperous, however, and assorted styles with attached handles like “scissors-glasses” and lorgnettes stayed fashionable throughout the eighteenth and into the early nineteenth century.

In the early 20th century, Moritz von Rohr at Zeiss made the Zeiss Punktal spherical point-focus lens system which controlled the eyeglass lens field for many years.

Despite the rising fame of contacts and laser restorative eye surgery, eyeglasses stay quite common, as their engineering has continued to evolve. For example, it’s currently possible to buy frames constituted of special memory metal alloys that return to their correct configuration after being bent. Other frames have spring-loaded hinges.

Glasses have come a long way, haven’t they? In fact, today you can even buy bifocal sunglasses.

Many of these designs are also distinctly better capable of resisting the stresses of day-to-day wear and the periodic accident. Contemporary frames are also frequently constructed from substantial, light-weight materials such as titanium alloys which weren’t obtainable in earlier days.