I always wore contacts too and had no problem. The problem with glasses is that if they slip down your nose, it's a pain in the butt to push them back up because your hands are just gross (even though you're wearing gloves, you'll want to wash your hands really well before touching your face). Also, I've seen more that one pair of glasses fall into the cadaver (literally) *shudder* so if you do wear glasses, make sure you have one of those eyeglass-strap-thingys that go around your neck.