Well, prk surgery is used to correct nearsightedness, farsightedness, and astigmatism by removing surface cells of the cornea. As we know that PRK eye surgery is a type of surgery that requires removal of some surface cells within the cornea without blades and may be more painful than traditional laser surgery. But on the other hand, by having this surgery, you will the free to see without glasses or contacts. And the Advances in technology have made this surgery very safe, you should not worry about it. But you also should know that all surgery involves some risks such as infection, bleeding. Since the eyes after surgery are very sensitive and fragile, you should take some measures to avoid the infection. 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.