Well, yes, it is possible for cataracts to come back after the surgery. Generally speaking, a cataract is a clouding of the normally clear lens of the eye, which can eventually block the central line of sight and impairs vision. And when some clouding occurs on it, some treatments should be taken to cure it, such as the cataract surgery. So we can say that cataract surgery is an operation to remove the clouded lens. Of course, by having surgery, it will just be effective, if the recovery is smooth. But on the other hand, after the surgery, if your eyes are irritated by some allergens, or some other factors, it will just make the recovery process stop. And in some cases, cataracts can come back. So just pay more attention to your eyes after cataract surgery.