Kri, during the night the nocturnal lenses painlessly apply slight pressure to certain points of the eyes (these are the points the laser surgery would be burning away) to shape your eye. When removed you see just as if you had the lenses in but your eyes gradually ease back to their normal shape. At first you get maybe 18 straight hrs of good vision but after a while (months not years) you'll only need to wear them every second night. Apparently the ancient Chinese used to place sand bags on the eyes of myopic people overnight for the same effect. I don't think it's suitable for heavy prescriptions though.
Thats really interesting...thanks for that Tom - certainly something to look into thats for sure.
Sister has laser surgery a few years back and she was physically sick the next day but was fine within a few days and has not had any problems since.