I got Lasik about five years ago. Shortly after I healed, my vision was absolutely incredible. Thereafter, it decreased slightly but is still probably at least 20x20. Before the procedure, I was about 20x200.
Initially, I noticed that my eyes felt dry in the evenings and moisturizing eye drops became part of my daily routine. I've since fallen out of that habit.
My night driving decreased some. Headlights, streetlights, etc, have a starburst effect that was not previously present. I also have a noticeable decrease in depth perception when driving at night. It's not to a level of impairment but something that I am aware of. I drive a little slower and take a bit more time, that's about it.
The benefits far outweigh the costs. I just told my buddy yesterday that I would pay for it again every year or even twice a year if I had to.