Not sure tinkerbell from what oyu have said that you are a candidate for Lasik......Lasik is for correcting vision, principally short sightedness.. What your consition sounds like is retinal or an iris function issue........
The beauty about Lasik is you know the results instantaneously, though they do butterfly your eyes for 24 hours.....this was done originally to stop dumbo Americans going out of the clinic and driving home, without realising all their focal lengths had been altered. My ex had it done with one of the original pioneers and said it really hit her that night - in being able to roll over and see the digi-alarm clock at 3am without glasses.
She had a small spot of 'focus' problems at about 100m to 120m for a while but that disappeared - that is not unusual. And her advice would be "Get the best Lasik that you can afford" - in other words be a little careful of these 'cowboy' high street operations. Personally I am 20:20 on both eyes and only need glasses because of two many contracts, computer screens and fine print of books....too much reading. I can still easily see a golf ball out there at 300 yards when I stick one out there!