I wear contacts [you didn't think an old fud like me was 20/20, did you? ] I have no problems. They let me wear good full-coverage sunglasses and they give me peripheral vision [great help when some kid on an orange Trek tries to steal a sprint when he creeps up on the outside]. I've worn them on 6-hour rides in very dry, windy weather without problems, but I always take some eyedrops with me just in case.