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Originally Posted by MikeDubreuil
I think he is talking about safety glasses.
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Those are probably optical quality polycarbonate, but that is not what I was referring to. Not everyone owns a pair of safety glasses, but I bet that every single person between the ages of 9 and 60 owns this item.
oh, heck, I'll give the answer... it's a compact disc.
CD manufacturers seemed to be the most concerned about optical quality.
Andy B.