Not a few glasses fill our history books. Benjamin Franklin (1706-1790) was one of the founding fathers of the United States and was considered one of the great minds of America. He was a very go-getting inquisitive man, a profession was not enough. He was a printer, Publisher, scientist, philosopher, diplomat, writer and inventor. This great head not for nothing decorates the American 100-dollar note, his influence on the then-known world was enormous. Technicians and natural scientists know, e.g. as the inventor of the lightning conductor is, but slightly less well known is that Benjamin Franklin is considered the bifocals also father or inventor.
The well-read Franklin had his love emergency with the constant change between his reading glasses and his distance glasses. So he thought about a solution. At the end, he mounted on each side of his glasses each two glasses, according to their optical needs. This brilliant idea inspired many optometrists and the development of bifocals in the sequence took its course. It has facilitated the life of countless people. In particular, the development to the bifocals that more has no hard edge between the remote and near visible range, allows a nearly infinite vision today, almost like without glasses. However, some a few disadvantages will remain the the weight of the bases, which are only moderately suitable for the sport and the somewhat restricted field of vision. But there is a solution for nearly 30 years.
Multifocal contact lenses. Although many eyeglass wearers have reservations about these small lenses, there is an ever-increasing rebuilt for contact lenses. Because there is no studded glasses, no slipping on the nose and of course an optimum field of vision. Short or long sightedness is no longer a problem today. If Benjamin Franklin probably already knew more than 200 years ago, his idea of the bifocal glasses would be as profound for the human race? Andreas Mettler