I had that procedure done just about one year ago to repair detached retina in my left eye. Surgery was a breeze, I remember being semi-conscience through it. The worst part was the next 72 hours which involved keeping my head facing straight down for the first half of the period, then turned to the left for the second half. Before you have the surgery figure out how you are going to sleep (you won't sleep very well) with your face pointed straight at the floor. Some folks buy or somehow get access to massage tables. It took the nitrogen bubble about 3 months to completely dissolve, which was a bit annoying, but I was left with 20/25 vision in the eye. While the bubble is in your eye you can't materially change altitude, so flights are out of the questions along with road trips to the Rockies. Best of luck to you.