I assumed the article meant that this was people whose vision had changed (so no longer had correct prescription) or cataracts. > LASIK surgery has been widely

I assumed the article meant that this was people whose vision had changed (so no longer had correct prescription) or cataracts. > LASIK surgery has been widely popular for just over 20 years now. I'd be interested to see how permanently corrected vision factored into this study, and how the results might change over time as we have more elderly who underwent LASIK at younger ages. Lasik can correct an astigmatism or other curvature problem but cannot do anything about presbyopia (which by definition affects older people) as that is a loss of ability to change the shape of the eyeball. That's why older people need reading glasses even if they otherwise still have 20/20 vision.