The usual eye floaters are usually caused by the lots of use of eyes in front of the computers. However after the cataract surgery, your eye floaters may be caused by the dryness. You should better have a full check in the hospital. I suggest you to have a good rest for the eyes, not using the computer this time.
Well, in my opinion, you should not worry about it too much. First, you should know that it is very normal to have this symptom after the eye surgery. As we know that Floaters are actually tiny clumps of gel or cells inside the vitreous, the clear jelly-like fluid that fills the inside of your eye. And for the reason which can cause it, it can be two ones. And it is more common for people who have undergone cataract operations. In other words, we can say that floaters occur after you have the surgery, because your eyes have become more sensitive. In that way, it can react to some environment factors. Anyway, they are harmless, and in most cases require no treatment.