Korus,
I had the lasik procedure on both eyes four years ago. I had a -3 and -3.5 prescription. I am now 20/20 and 20/15!!!
As for night vision, people are making a bigger deal out of this than required. The human eye, evolutionarily, is not made for nocturnal activites to begin with. Our night vision - it you could call it - that is minimal. I find it amusing when I read all these reports about the average citizen‘s fear of laser surgery because they have fears of losing their "night vision." In reality I suppose, the only segment of the population who should be concerned are pilots and some combat arms trades. Even then, night vision equipment has come a long, long way and will compensate for any real or perceived loss. I don‘t know too many civilians (none actually) that enforce light discipline in their own home when going to the bathroom at night or down to the basement. A light switch or a torch is always at hand. My night vision did not noticeably decrease. There is a period of adjustment when headlights will have a "star" effect (about 3 months) other than that, it was fine. To be honest it was the best money I ever spent. I would caution you to be careful about where you get it done. Some clinics have these "specials".. reduced price per eye. Ask and see what kind of back up support the clinic has if something should go wrong / if you don‘t get the expected results / what is the after treatment program etc? I don‘t know what the going price is now, probably much lower then when I had it done. I paid $2200/eye. There were places charging $1000/eye at the same time, but when I visited both - the more professional staff and the back-up support at the more expensive clinic made me feel more comfortable. They should sit down with you and explain all the risks free of charge.
Hope this helps, cheers.