The CAA tend to favour those who already have a medical (or so I am aware of).
The initial standard for the CAA is no greater than -5d with the renewal being -8, not sure where you would stand on this - hopefully someone will clarify.
If you have laser surgery the initial limits still apply, so it really makes no difference, plus if the treatment goes wrong in any way - you may never fly again !
Best of luck
Lee
