Safety glasses have a wider section where the lens sits in the frame that holds the lens in the frame during impact. Also the lens is made of polycarbonate or trivex which is impact resistant. Z87.1 will be on the frame somewhere.
They also make an safety occupational lens with the bifocal segment on bottom and top for under dash or cabinets etc.
Last edited by Stuart Adams; 08-22-2018 at 10:20 PM.
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