Who invented bifocal contact lenses?

Answer 1

The idea dates back to ancient Egypt where heiroglyphs mention small lenses that made things larger. In 1 AD, Seneca the Younger (tutor of Nero) noted that small letters could be seen larger with a globe or glass bowl filled with water. In 1284, Salvino D'Armante created the first wearable pair. Later improvments include concave lenses by Nicholas of Cusa and dual panel bifocals from Benjamin Franklin

Answer 2

Benjamin Franklin.

Who INVENTED The Bifocal Glasses?Answer: Benjamin Franklin

Benjamin Franklin Invented The Bifocal Glasses

Glass lenses, for use as magnifiers or for starting fires, date to about 300 BC, but the first eyeglasses to aid or correct vision were almost certainly invented in 1280 in Florence, Italy by the Dominican friar Alessandro della Spina and / or his friend, the physicist Salvino degli Armati. Prescribed for far-sightedness, the glasses had convex lenses and were worn by Armati, who had injured his eyes while performing light refraction experiments and discovered that it was possible to enlarge the appearance of objects by looking through two pieces of convex glass.It was in the early fourteenth century that concave lenses were used to correct near-sightedness. In fact, Pope Leo X was depicted wearing glasses, with concave lenses, in a 1517 painting by Raphael. Whereas early eyeglasses were made of polished quartz, by the sixteenth century developments in glassmaking made it possible to mass produce them from glass.

Bifocals, the combination of both concave and convex lenses for both types of vision correction, a top lens for distant viewing and a lower lens for reading, were developed around 1760 by the American statesman and inventor Benjamin Franklin.

Answer 3

The history of bifocals is partially in question, but the most likely place that they were invented is in London in the early 1760s, by Benjamin Franklin. Letters that Franklin wrote to George Whatley and others seem to confirm this.

Answer 4

Dr. Frank Sakomoto, a Chicago optometrist came up with the first practical bifocal contact lens.

Answer 5

Benjamin Franklin

Answer 6

benjamen franklin made the first bifocal

Answer 7

Ben Franklin