PRK and it's predecessors were in wide use in the early 80's and it was developed far earlier. What they did and what Lasik does are only different in the tool used to make the cuts. The stuff in the early 80's was done by hand with scalpels in a hospital, today it's done in an outpatient surgery through the lens with computer controlled lasers using layouts developed mostly by hand in the 80's. The most recent versions of Lasik now can map and create custom modifications of the standard cut patterns.
But basically the procedure's been in use for more than 30 years. Considering the procedure isn't even recommended until your 20's and myopia sets in at 40 the effects of Lasik on aging eyes are well understood at this point. If you are avoiding Lasik because you think it's long term effects aren't known you really need to look into it more and understand the history.
My wife went from about 20-400 with an astigmatism (before surgery got worse every year) to 20-15 and hasn't had a single problem (other than the night halos which are guaranteed). In her opinion it was the best 3 grand we ever spent. She can even see better than me and her vision is fixed by the scars, other than age related myopia her vision will never change.