I recently did SeaVision. Great job, excellent turn around, mask seems to fit well (only a pool dive at this point) but be advised.....I did bifocals due to age and short arm syndrome...... when I received the mask I was really disappointed. I could not see anything in my living room. They were very nice when I called to inform them they screwed up. They politely informed me it would be fine under water, just like it says in their email, AND THEY WERE RIGHT.
So when you try on your prescription mask above water it will not look right but it will be fine under water. Man I hate it when I don't read the instructions and look like an idiot.