I think there was some guidance around waiting 2–3 years since your prescription changed, which I met—though that's obviously imperfect.

There was never any clear cause/effect. My best guess is that it was from being super tense during the surgery. I found it extremely uncomfortable and intense to be fully conscious, knowing it would be bad news if I moved my eyes during the procedure. (They're holding a flap of your eyeball open during it, etc—super fun.)

Would have requested a little higher dose of Valium if I could do it over again. :) And maybe crossed a border to a high-volume specialty shop instead of my local ophthalmologist.