by Mack » Wed Jul 07, 2010 7:28 am
Isa....I recall my manifest and cyclopegic refractions were similar, since I was fully presbyopic in 1999 at age 53. The doc said my +2 add for bifocal pre-lasik at the time might gain another half diopter as I grew older and then level off, but that the distance hyperopia shouldnt change more than another quarter diopter. Since the procedure, enhancements and the CK, I continue to only use +1.5 for readers and only add higher + readers for really close detail work. Night vision does degrade a little compared to pre-lasik since my ablation area of treatment on 6 mm dark-adapted pupils with the VisX 2 laser could not produce wide enough full correction and still cover the 1.25 of astigmatism. So with lower light, more of the hyperopic error creeps in. Vision in bright sunlight is virtually as good as pre-lasik corrected.
If you are not yet into presbyopia, the issue of not having to over-correct so much to avoid temporary myopia does not really apply, IMHO. It's apples and oranges. Remember you are treating to achieve 20/20 distance vision, not for losing accomodation because of hardening lenses. With +4 and +5 patients, there is going to be a lot more regression than the lower scripts. It's just nature's way of fighting back to reclaim what the laser removed. I was intentionally over corrected by -1.5 D in both eyes to allow for that. The doc said that was by design for my age and for the amount of correction needed, and to enjoy the temporary clear close-up vision I had never ever had. I remember borrowing my brother's -1.25 glasses that helped with driving for the first few months and then I got an interim script at about 8 months as regression proceeded that was mostly + astig correction. It took well over a year for all the regressive changes to stabilize. The newer lasers and techniques might produce less regression with high hyperopes. That's something a hyperopic lasik specialist with years of experience would know best. The doc I used is now retired, so I wouldn't know who to recommend. Just do good research and interview all the lasik docs and treatment centers near you with the best reputations to find the one with the best hyperopic track-record for successful outcomes. There is as much art as science in this trade and there really is no substitute for experience.
Good luck!