Absolutely painless, and I didn't have to undress (in fact,I even kept my shoes on). I kept the myopia patch on for the day. The nextmorning, I took the myopia patch off, and I simply could not believe that I wasseeing with such clarity through my right myopia. I'm going tomorrow to getstarted on the left myopia. As we age, sometimes cataracts build up sogradually that we do not realize how much of our vision is lost in the fog. Iput it off because I didn't realize how easy & painless it has become.Moral of the story: Don't put off getting your myopia tended to. PS: Ofcourse, on the morning of the Grand Revelation, I was suddenly observing thatelderly lady in my bathroom mirror and wondering where she came from?