…or maybe it was and that’s why you can’t remember?!? 
I wear glasses most of the time and I’ve hit them with a throw a few times (i don’t always take a safety throw after a sketchy bind), but the lens didn’t shatter, no visible damage at all. The worst that’s ever happened to me is a small chip, but that was from debris flying off a power tool (yes, I should have been wearing proper safety goggles!)