Well, seeing as that is the case (I checked too), vat da heck er ya doin working on the lathe without a face shield? Glasses might be great for little bits o stuff flying straight at you but they won't do much for CA all over your face or chunks trying to take your nose off. They also don't work to well for streams of stuff as chips have a lovely habit of bouncing off cheeks and into eyes.
Safety first! (god, that sounds so trite but it's true)
Dietrich