There are some programs you can download to help reduce eye strain - they will remind you every so often (20-40 minutes) to do some eye exercises. I find this helps me if I am having sore eyes - especially looking a few inches above the monitor into the distance (20+feet).
I also find that if I am wearing glasses, going to contacts helps, and vice versa.
I also find that if I am wearing glasses, going to contacts helps, and vice versa.