I have worn hard contacts for several years. I have a Performance brand sunglasses with interchangeable lenses, one of which is clear. I use that lens in the winter. I've never had problems in the winter with my hard contacts while using these clear glasses.

This spring the pollen was so thick that it was irritating my eyes as if it were dust. That was the first time I can recall having my contacts so irritated. I got that feeling biking and being outside for any extended period of time. Fortunately it only lasted a few weeks. I had to wear my glasses while commuting and then switch back to contacts once I got to work.