because bifocals are still used today and without bifocals you would have to have 2 pairs of glasses that's why its Important
Bifocals are important for those with impaired vision, so they can see both far and near without taking off their glasses or switching them. They were invented by Benjamin Franklin in 1700â??s.
Please help me find my bifocals.
The bifocals he bought were used. The lower lenses on my bifocals allow me to read more easily.
bifocals changed in size, shape, and magnification.
Bifocals.
* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals
Bifocal lenses as a concept were not patented; there are dozens of patents related to bifocals, bifocal contacts, and processes to make bifocals.
bifocals were invented on the 300th block of Market street in Philadelphia
The word "bifocals" has three syllables: bi-fo-cals.
The bifocals haved saved lives by letting people see clearly.
ben Franklin invented his bifocals at his house in philly and made them on March 23.1784
There are different types of bifocals and different sizes so there are different costs.