Myopia is due to the size and shape of the eye, factors that are determined by the patient's genetics. There is no ideal age for myopia surgery. In any case, it is important to keep in mind that the growth of the eyeball occurs until the age of 20, which is why it is important perform the myopia surgery when the eye has fully developed, otherwise the refractive defect may reappear. When the myopia is medium or very mild, usually does not return after the operation. When the myopia is degenerative may occur corneal modifications after surgery, but the vision will always be better than before the intervention. If a patient operated on for myopia were to present variations in vision and it is found that the defect has reappeared, the problem can be corrected again with laser surgery as long as it meets the requirements for this intervention again.