Well, first, I have to say that it is normal to have diplopia after the surgery. And you should know that diplopia named as double vision, is a condition in which, whenever you look at any object, you see its two images rather than one. So for your situation, I also need to tell you that you may be infected by some irritants. In common, after eye surgery, it is easy to get infection. And then, double vision can be possible. For the symptoms, pain around the eyes, such as in the temples or eyebrows can be possible. To treat it, you can wear an eye patch or special prism glasses to minimize the effect of double vision. Also, just find out the infection cause and have some medical cares. If the situation is serious, just go and see the eye doctor as soon as possible.