Jorbar1551:3)Others masks including the mares x-vision masks can be bought and the prescription ordered by you or your local eye doctor.
I did this (and the lenses were pretty cheap too!) and I love my X-Visions!
One word mind...Get your LDS to fit them, I was a little too eager and broke a good pair of x-visions on the first go...:shakehead I now have a spare pair mind (abiet glued together!)
I never wear contacts underwater, I like the oppotunity to see underwater, even if my mask gets knocked off..etc..