I haven't had a eye rebuild, but do have a similar problem: my prescription for distance correction simply will not allow me to focus on the sights.
Solution: get bifocals, with the primary lens corrected for distance (in your case, no correction) and the bifocal corrected for front sight distance. Most optometrists/opthalmologists are under the impression that we need to see our target clearly, so there may be some explaining necessary.
Here's the trick: have them put the bifocal in the top of the lens. Typically, these are called "occupational" lenses, meant for tradesmen (electricians, plumbers, etc.) who work at arm's length above their head a lot.
Since most people tilt their head forward a little when shooting (especially if you're old school and use Weaver), having the "front sight lens" in the top makes it easy to use. Since I also tilt my head to the right a little, I had the bifocal in the right lens shifted inboard as far as possible to give me a larger "aiming window". Basically, put on glasses, aim your pistol, and have someone mark the part of the lens you're looking through: that's where you need the "front sight lens".
It took a couple of days to get used to them, but I wear them all day, every day with no problem.