Do they make OSHA approved trifocal safety glasses? I have a stubborn co-worker who needs trifocals but would rather not wear the set that fits over the glassed he has. If you have a link I would appreciate it.

Thanks

I don't know about trifocals but here's a link for bifocals.
http://www.safetyglassesusa.com/dewalt-reinforcer-rx.html

All of the places that sell prescription glasses I've been to sell prescription safety glasses. They all could make bifocals and trifocals.