Research shows that the integrity of the cornea is not lost during procedures performed by qualified surgeons on qualified patients. Immediately after you have undergone PRK eye surgery, your eye doctor will instruct you to refrain from any physical sports, especially those during which you have direct contact with other players. One of the main reasons that your eye surgeon will tell you to avoid exercise and sports immediately after PRK surgery is to prevent infection. The results of both are very safe and effective.