This is all just from personal experiences http://www.usaeyes.org/ask-lasik-expert/viewtopic.php?t=1189
and what I’ve picked up mostly from this site so don’t take it as gospel, but, there’s a few different things at work for hyperopes as I understand it.
Firstly, the actual surgery is trickier. With myopes, they just blast away in a nice 6 or 7 mm circle in the middle of the eye and away you go. Done. Hyperopic correction is trickier because they have to make the cornea rounder / steeper or ‘bulge’ in the middle by blasting away around the outside of the cornea without getting anything off centre etc. This link explains it a bit better: http://www.usaeyes.org/faq/subjects/hyperopia.htm
There’s more regression with hyperopic correction usually as well and the regression can
be a bit unpredictable which can
induce a bit of astigmatism. So yes, they do overcorrect you into short-sightedness to allow for this regression. The first week is a bit like having some sort of super macro lens on your eye!
The third thing and this is what’s been slowest for me, is your brain adjusting to your new eyes. Hyperopes usually are very good at accommodating for their refractive error. I had glasses since I was 4 but never had to wear them until I hit 28 or 29 even for the closest work. This was the start of presbyopia for me. When I had surgery, there was still around 1 dioptre difference between manifest and cycloplegic (dilated) refractions. Unfortunately, after surgery that difference is still there for a while. Your eyes might be corrected after surgery to, say, +0.5 but you may manifest at, say, -0.75 in an eye test. Takes a while to stop accommodating for your old error that no longer exists and you see the world as if you are myopic even though you’re not!
The good thing is, we should have good strong eye muscles which might hold the need for reading glasses at bay for a bit longer!
As far as the glasses go, if you are like me and wanting a minus lens to see clearly but are actually still a tad on the plus side, it’s a bad idea. Will just delay you getting used to your new eyes. (my interpretation only and may not apply in your case...) Of course this has to be weighed up against the potential for walking into a bus on your way home from work... :wink:
Night vision is difficult for me as well nearly 6 months out. Seems hard to get a focus on anything. Bit of starbursting to content with as well although not too bad. Hoping I can get rid of that down the track.
It’s definitely a long process but hang in there! Some days will be good, some will be awful but should all be good days in the end!