Betcha y’all didn’t know 143

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May 23, 1785, Benjamin Franklin reveals his design for what would later be called bifocal glasses. The Pennsylvania inventor, printer, author, diplomat and American Founding Father had grown tired of alternating between two different pairs of glasses to help his near or far vision. So, he came up with an idea to, quite literally, split the difference. Franklin is widely credited as the inventor of bifocals.

[ri702bill 12,100]

So... Ben was in his late 70's when he did this. Don't know if a bit later he made trifocals - probably.

[Handy Don 16,590]

1 minute ago, ri702bill said:

So... Ben was in his late 70's when he did this. Don't know if a bit later he made trifocals - probably.

Nah, he probably just went straight to “progressives”.