POST LASIK QUERY. Of pupil regression?

I had my LASIK done 8 months ago with prescription as follows OD : -4.00 -4.00 * 170° OS : -6.00  -2.50* 170° But, yesterday I had my eye test and optometrist told me I had some power OD : -0.25 -2.00*15° OS : -1.25 He said it could be due to pupil regression and it will fluctuate, also I had some dry eyes! Kindly elaborate why this power came back although I am still seeing 6/12 with my right eye and 6/5 with my left eye without specs. I also want to ask is, can this number improve? As yesterday was my 5th follow up and in each of the previous follow ups, these powers in my eyes fluctuated ( +0.25 in first week then -0.75 in 2nd week then -2.5 in 3rd week and now -0.25 with -2.00 cylindrical) Was my LASIK not done properly or is there any kind of pupil regression?