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Having lost central vision in one eye while in my fifties, I had to compensate somewhat to decreased depth perception, and I found that I had a few misconceptions.
1. I didn't completely lose it, as peripheral vision provided some.
2. Parallax depth perception only really functions out to about ten or fifteen feet, after that we judge distance by other clues like perceived size of objects.
3. The only real difficulty I had was when an object was flying towards me and I tried to catch or bat at it. If someone tossed my golf ball to me on the green, I'd just step out of the way and go pick it up. An no tennis, badminton, baseball, volleyball, etc.
If you have natural monovision, I doubt that you'd lose any depth perception from just clearing away the fogginess that is cataracts.
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