I don't wear glasses or contacts while riding, but I dislike bugs in my eyes as much as anyone. I started wearing safety glasses when I ride, and they work great! Especially because the ones I borrowed from work are shaped like Oakleys but with clear lenses. I have another pair that I use that come in a tinted sunglass like color, and I think they are made by a company that makes shooting glasses. You should check out the gun section of your local outdoor supplier, they might have some affordable and even semi-fashionable (also functional if you look for the kind that wrap around your face) clear eyewear that you can wear when you're riding to keep the wind from drying out your contacts and keep bugs from your eyes.

K.