Well, generally speaking, in the first week after the prk surgery, you are not supposed to do some exercises. And it can be dangerous for your eyes. As we know that after the prk surgery, your eyes can be very fragile, so it can be hurt when you have the exercises. Also, if you use your eyes too much, that will lead to eye strain. And in some cases, it can be dangerous. So you should follow the things the doctor has told you. Besides, For example, you should avoid eye injuries by wearing a protective shield at night and with naps until you are advised by your doctor. Also, you should remember not sleep on the side of the operated eye for the first night.