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The earliest appearance of Bifocals was when Benjamin Franklin wore them in the 1700's.
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∙ 14y ago
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What are glasses that can focus at two different lengths called?
Bifocals.
Why are bifocals important?
because bifocals are still used today and without bifocals you would have to have 2 pairs of glasses that's why its Important
What building were the bifocals glasses?
You left them in the car.
What are the eye glasses that see both near and far called?
These type of glasses are called bifocals.
Who invented bioforcal glasses?
Benjamin Franklin invented the bifocals
What Chinese invention did Benjamin Franklin use?
Glasses ...He invented Bifocals .
What is the name of the glasses which can focus on two lengths at the same time?
Glasses like this are called bi-focals. Bifocals
Why are some types of glasses called bifocals?
Because they are bifocals. Bi=two. The lower half lets you see things Close, the upper half lets you see things farther away. Like two glasses in one.
Why did Benjamin Franklin make bifocals?
So that he would only have to carry one pair of glasses.
What are the glasses called that have lines for lenses?
They are still called glasses .......................i thinkThey are called bifocals. This means that there's two different prescriptions on the same lens.
What is the importance of bifocals?
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.
How do you use bifocals and television in a sentence?
I used my bifocals to watch the television
