After I had my first cataract removed, I was left with near perfect distance vision in that eye - better than when I first started wearing glasses at the age of 14 ...
Two years on, I needed a cataract removed from the other eye. I was offered the choice of matching the first eye or having the a replacement lens for reading fitted, on the basis that the brain learns which eye to use for various purposes ...
No way! If it didn't work for me, I doubt I would be able to take it back for a replacement, so I settled for matching distance vision.
I now no longer need glasses for normal vision for the first time in over 50 years but, having worn bifocals for 20 years, I got fed up with never having reading glasses around when I wanted them (despite having several pairs)! I now have a pair of varifocals, which also correct a slight mid-field deficiency I wasn't really aware of until I got them, with photochromic lenses. I still find a pair of +1.00 ready readers much better for the PC, though ...