As far as I know, there are no myopia limits anymore. There are no pre-operative limits anymore either.
As long as you attain a 7/10 corrected visual acuity monocularly and 10/10 corrected visual acuity binocularly you are fit to fly.
Do not worry and go there relaxed. Go there with glasses rather than contacts and if possible a report from your ophthalmologist – I did not have one on my initial but it was not a problem.
I am assuming you are talking about EASA. FAA requisites are even more relaxed.