As you get older, the focus range of your eyes decreases such that they more or less become "stuck" at a certain focal length from your face. Laser surgery will generally make the "stuck" range or point be further out, which could harm reading even if it improves distance vision.
The ideal "stuck" point probably depends on what you do the most. If you are at a computer screen often, then about 14 to 24 inches seems like it would be the ideal, although you couldn't see small things up close well.
My eyesight's focus is settling to around 10 inches away, which is shy of the ideal monitor range. Is surgery worth that extra 8 inches?
The bottom line is that age is a bitch and laser surgery forces you to make tradeoffs as old eyes will only have one ideal focus with or without. Choose the red distance or the blue distance, but not both.