Small Incision Lenticule Extraction (SMILE) is a minus eye surgery method using a laser. SMILE is done by reshaping the cornea using a laser, so that light can be refracted well into the retina. In good vision, light will enter through the cornea and lens to refract to focus on the retina. But in patients with nearsightedness, the cornea is disturbed, so that refraction of light does not focus on the retina and causes blurred vision. SMILE is done to improve vision in people with nearsightedness and reduce the use of glasses or contact lenses. SMILE Indications For patients with dense activity, the doctor will recommend SMILE rather than LASIK. This is because the SMILE procedure requires a smaller incision than LASIK surgery, so the patient does not need to worry that the corneas that have been slashed will escape from the eyeball. In addition to the above reasons, the doctor will also recommend the SMILE procedure in the following conditions: Patients aged 22 years and over.