I would put it off as long as possible (but not too long, they can get too large and be more difficult to remove.) I had it done in both eyes. I can recommend some things.
1. Have them put the close vision lens or the more expensive ones that see both near and far. My doctor recommended the close but I went stupidly with far distance. That was a mistake. Try looking in a mirror and checking your eye for an eye lash or something in it, reading, etc. And far lens didn't work either so I am somewhere middle vision. The doc said it is hard to get the far lens placed just at the right depth or some excuse anyway.
2. If you have lightning type flashes at the side of your eye after surgery get to the eye doc soon. You might need laser surgery to repair tears to the inside. I did in EACH eye and now because my surgery eye doc didn't even check me after surgery the next day the doc who filled in missed my having a small tear in the side of my left eye the small black dots got worse and floaters (which never leave) appeared along with the black dots.
3. Cat. Surgery can bring on the hardening of the eye fluid and therefore tears. (They don't tell you that before.) So now I have a large floater from the tear (repaired by laser surgery) in my left eye that bothers my vision and my right eye is blurry because of a film that can get on the cataract lens that they have to buff away with laser. I've had each eye laser repaired and buffed once (4 laser surgeries total) and now the right needs buffing again. Once they hit it with laser you can see clearly the same day. It costs from 3 to 4 hundred to have them buffed. Buffing is not the medical terminology but is what I call it because the laser cleans the fluid of the lens. So get a doctor recommended by friends, family, etc. A doctor can make a BIG difference. My wife had a good one and no problems. I had a bad one and a LOT of problems.
I don't mean to scare anyone but hope to help some of you avoid the problems I have. Get a GOOD recommended doc. And go with lenses close sighted or the close/far type. And watch out for flashes and or spots.
Sounds like you had a bad ophthalmologist.