Using Latisse after LASIK
Yes, it is safe to use Latisse after LASIK. I'd recommend waiting at least a month or two though, so that when you apply the medicine to the upper lid, you don't disturb your LASIK flap.
Getting the medicine in the eye is not a problem, as the medication is bimatoprost, an eyedrop typically used to treat glaucoma.
It is good to try to avoid getting it in your eye though, since there are reports that it may have a risk of turning blue eyes brown.