Hi J.,
I too have severe dry eyes and use the Acuvue Oasys contacts. They have helped me as well but as you well know nothing really helps when you have this severe of dry eyes. It can control your life.
I tried Restasis (prescription needed), and had very good results for nearly a year. Then it seemed to not be working or I was becoming immune to the product working.
Opti free seems to be the best brand I can find for my dry eyes. Try that one and also buy some Systane re-wetting drops as well. You can find these in 2 bottle packs at Sam's. They are way better than any other rewetting drops I have used in the past.
Hope this helps you. I know the misery of dry eyes!
W. T.