Suggestions on prescription goggles

I swam my first open water race this past weekend and really enjoyed it! Nearly all of my swimming has been in a pool and so it was great to see that I could swim the distance and do it without the thick black line to follow. I realized the night before the race that my vision is pretty horrible without my glasses and I haven't been able to wear contact lenses for a while. Thankfully, for the most part, most of the guide buoys ok to see - I could also follow the pack fairly well (I probably owe a 13 yr old girl a milkshake for letting me follow her!)

I really enjoyed swimming in the lake, but know that I need to do something about my vision problems. I was wondering whether anyone has recommendations on brands for prescription goggles and how to pick the right prescription for open water swimming.

Thanks!