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When did they start producing spectacle lenses with UV blocking filters?

Some lens manufacturers market their products highlighted as UV blocking lenses like it's something new while UV blocking lenses have been around since forever.
This got me thinking though - at around what years do plastic glasses lenses have UV filter on them?
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233488 tn?1310693103
Uv blocking IOLs have been around for over 25 years
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Thanks for the answer. It's safe to say then that for spectacles it's a bit older I think. Then "UV transmission" glasses should be highlighted if someone wants to buy one.
UV blocker is noted.
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