They didn’t come back, the posterior capsule (the back of the bag the new lens is resting in) can sometimes thicken giving the same effect as a cataract. This is easily remedied with an outpatients appointment and a bit of laser. Doesn’t hurt, takes 10 mins.
Many people are prone to over dramatising anything to do with their eyes because having anything at all wrong can be very anxiety provoking.
Lost count of how many frightened patients have told me their neighbour said “they take your eye out and dangle it on your cheek” which is impossible to do without blinding someone, the optic nerve isn’t on a spring but their neighbour told them so it must be true...
Or how many patients wear their eye patch about for days, sometimes for what they feel is extra protection but often so relatives can see they’ve had something done