Hypotears /artificial tears thats best for dry eye? Can I use artificialtears (preservative)daily for long term? I can't find restasis, what's other best?

Any tear substitute. There are a great many drops for dry eye. For longterm use i recommend preservative-free ones to avoid allergic reactions. Restasis is dilute cyclosporin, an immunosuppressant only available with a prescription .
Artificial tears. You can use artificial tears long term. Most formulations are found in over-the-counter sections and are safe. Restasis appears to be effective and can be used for long period of time, but i would try to go off of it, say, after 3 months to see if the function restores on its own.