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5 June, 23:10

Who invented bifocal glasses

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  1. 6 June, 00:53
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    History of bifocals and trifocals

    Benjamin Franklin, the early American statesman and inventor, is credited with creating the first multifocal lens for eyeglasses. Prior to Franklin's invention, anyone with presbyopia had to carry two pairs of eyeglasses - one for seeing distant objects and one for seeing up close.
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