Available recently for $9: http://www.baileysonline.com/Safety-First-Aid/Safety-Glasses/Goggles/Wire-Mesh-Safety-Goggles.axd
No mesh "glasses"/goggles are ANSI-compliant eye protection. Like visor on combo-helmet, they'll keep dust & chips (think- wind gusts) out of your eyes. The kind of poo that ends a job for the day. I really hate that when it happens.
I did have that had to have been a very small piece land in my eye after coming through that mesh. Would have been alright but I managed to poke myself in hte eye with my finger while rubbing it.