When Were Bifocals Invented?

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Bifocals have two-part lenses, one part for reading and the other part for seeing far away. They were invented by Benjamin Franklin in 1784 in an attempt to correct his myopia and presbyopia.
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When Were Bifocals Invented?
The invention of many things that are attributed to one man is often open to debate. For example, the light bulb was actually invented by Sir Humphrey Davy in the early 1800s, long before Thomas Edison was even born. (Though it should be noted that... More »
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Q&A Related to "When Were Bifocals Invented"
In the 1700's eyeglasses were known as "spectacles". Bifocals are spectacles that were invented by Benjamin Franklin. Ben Franklin invented these spectacles so that he could
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Inspiration The inspiration behind Benjamin Franklin's idea to invent bifocal lenses still resonates among many people who are now the age that Franklin was when he invented them.
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they where invented for people who arent far sighted or near sighted so that they can see far and near
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Ben Franklin’s discovery of the bifocal is generally felt to have occurred in the early 1760’s. Most hyperopic presbyopes don't go into bifocals until their early 40s
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In the 1700's eyeglasses were known as "spectacles". Bifocals are spectacles that were invented by Benjamin Franklin. Ben Franklin invented these spectacles ...
In the 1700's eyeglasses were known as "spectacles". Bifocals are spectacles that were invented by Benjamin Franklin. Ben Franklin invented these spectacles ...
In the 1700's eyeglasses were known as "spectacles". Bifocals are spectacles that were invented by Benjamin Franklin. Ben Franklin invented these spectacles ...
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