My husband and I are both pretty blind without our glasses, but because we snorkel alot, we had masks made with our prescription in them. (At a local dive shop). It was pretty expensive, but ours are also pretty fancy. You may be able to get them done for $125, give or take a little. The only other choice, as far as I know, is to go without. Except, there was a thread quite a while ago where one cruiser managed to glue some goggles to an old pair of glasses. Don't know how well this would work.
Anyone else have any ideas? Used pair for sale on E-Bay??