[nawgz]

> So how many times is that on average?

Certainly it is a number 0-many

I know an uncle who has had it twice

I am ineligible for the procedure as my farsightedness is too severe when coupled with a thin portion of my cornea

I would guess the first surgery is generally the most severe and the followups require less material removal, but I think your research is probably more detailed than mine at this point.