What Is Lasik Eye Surgery? Lasik eye surgery is one of the most commonly used methods in the treatment of focus defects. This method is suitable for patients who are over the age of 18 and have not changed their glasses numbers in the last 1 year. For Lasik treatment to be applied, refraction defects and eye structure in the eye must be suitable for this method. For this reason, a detailed eye examination is performed on all patients before Lasik treatment. In Lasik application, the operation is decided according to the suitability of the patient. For this reason, the patient must first make an appointment with the doctor and be examined. After the appointment with the doctor, questions such as what is lasik eye surgery, how long and how long the operation will be completed can be answered.