Well, it all depends on what kind of sports you play. Generally speaking, you can have the exercise three days after the Lasik surgery. But you should also know that there are still some things you should pay attention to. For example, if your sport is boxing, martial arts, wrestling, or another sport with a big chance of getting hit in the eye, I will not suggest you to do. Besides, you should Hold off for two weeks from spending time in Jacuzzis, playing water polo, or swimming just about anywhere. In my opinion, you'd better go and console with your doctor, just take some exam about your eyes. And then you can judge if you are suitable to take exercise or not.