I have a "bad eye" that I've written at length about here on a2k - if you're looking for a self involved worry wart (there were good reasons), check the thread -
http://able2know.org/topic/131881-1
But to simplify -
There were five surgeries in all on that one eye, two of them for what the surgeon called a cat eye - big lens slippage - but my lens went into a different area than all on this thread because of an original bad surgery, so that cat eye thing is not likely to affect you folks. (I say, firmly and hopefully). Anyway, the cat eye thing stopped after the second effort to fix it, thank goodness.
The 5th surgery on that eye was because a while after the fourth, I got blepharitis in that eye, and the lid gradually drooped and drooped some more. Blepharitis is a chronic condition, and not everyone who has it has their eyes go droopy - my lid muscle was probably quite weary by then.
The good news - I had and still have a new doctor who understood my fears of cataract surgery on my "good eye" - and that one went perfectly, no lens problem at all, great vision.
My point, be persistent in seeking improvement!