Well, generally speaking, watery eyes can be a sign of eye infection. So we can say that when your eyes are infected by something, it is possible to have watery eyes. For your situation, you should pay more attention to your eyes. As we know that after the surgery, your eyes will become very sensitive and fragile. At that time, your eyes will get eye infection easily. If eye infection occurs, it will lead to other symptoms, just like this. Also, it will slow down your recovery speed. For example, you should avoid eye injuries by wearing a protective shield at night and with naps until you are advised by your doctor. By the way, some heavy exercises should be avoided.