I had mild dry eye and had punctal plugs put in a while back (around 2 years). Has helped a lot with my contacts not drying out, and I haven't had them fall out and need replaced yet.
If you have more sever dry eye, you may need to do a Restasis treatment (drops you use every day for a few months to increase tear production).
Also, avoid things that can dry out the eyes if possible like antihistamine allergy meds, nasal sprays like Flonase for allergies etc.