I have never had a problem with my contacts while riding. I always wear sunglasses; i never go outside without them and can't imagine riding without them. I have ones with the tri colored lenses; my face is really small, so i had to try hard to find ones that don't look too awful. My regular sunglasses are kid sized, but they don't work for riding. I also need reading glasses, but, so far, the speed on my bike computer has pretty big numbers. I keep my reading glasses in my bike bag, in case I stop and need to read something. It always pays to buy the right products. In this case, I think for safety's sake.