If you think your sight has rapidly (3-6 months) got worse, then get checked out! Where I live at my age it's free, but pay for it if you have to!
The replacement part is that you get a fixed focal length lens, or by going privately and paying about a '60s Carrera 2647S for each eye you can get a focusable lens. That's right-pondian. My experience of left-pondian medical bills suggests you may be paying heavily. Or your medical insurer if you have one, of course.
Yeah, it's normal. My brain has had over 70 years of integrating left & right eyes and now it has to do it all over again. I got no reaction from 1 & 2 & Booster vaccinations. It will be a few days before the operated eye is fully integrated. Then I have to get the other one done.....