Posted by Meiguoren (413 days ago)
Just to follow up: at the dive shop you choose your mask that you like from among those that will accomodate the prescription lens, and then they order the lenses from their supplier. So you will need to supply them with an accurate prescription as well and then most likely wait a few days for the lens to come in. We opted for the contacts because of cost and convenience. If you haven't tried contacts in the last few years, you might give it a whirl, they've gotten much more comfortable, easier to use, and cheaper.
(I am based in Guangzhou)