Sometimes I don't wear glasses, though I always have them there on my aerobars, like especially really early in the AM or in the evening after riding for hours and hours and cleaning fingerprints off them a bazillion times...I think, though, if I had yellow polarized lenses, or those cool new ones that change, I'd leave them on.

On my Saturday ride, the group leader had a wasp get stuck _under_ his glasses, so it got in plenty of stinging time before he was done swerving and cussing and finally got stopped and got the glasses off. Luckily, we had benedryl, aspirin and ice with, so it hardly swelled at all. The next day he had two bags under his eye instead of one, so I was calling him the Two Bagger! I'm not sure if he got it. Maybe he did, but was just ignoring me...