Depends on the glasses. These days, I always ride with glasses, but they're cheap safety glasses, not corrective lenses of any kind. Safety glasses are made specifically to protect your eyes from flying debris, so theoretically they're safer if a big rock flies into your eye or something. But they also are shaped to fit closer to your face, so I don't have any problems with the wind-tunnel effect you complain about. Best of all, they keep the wind out of my eyes, which is a problem at speed.

Now if I could just find something comfortable to block out all the wind noise.