I always had much better than 20/20 vision when I was young, and could see things at distance that most people couldn't, and very small things up close that most people couldn't....
Then, when I got old and my arms started getting shorter, and I started leaning on readers more and more, I went to an optometrist to get some clear on top progressives. Well, apparently I needed a slight astigmatism correction as well as a very low distance correction.
Then, over time, that got worse and worse too, as my aging eyes became less capable of working through it.
Got to the point where, without my glasses, I couldn't see which kids were mine at the beach.
Eventually did lasik....fought dry eye for a long time, and still probably have it a little bit, but otherwise no complication
Now many years later, I still test 20/20 for distance....But I can say for sure, LASIK's 20/20 is not nearly the same quality of 20/20 that I had in my youth. Still, I'm glad that I did it.