As the incidence of myopia in China continues to increase and the number of people suffering from the disease increases, many parents and myopic patients are very concerned about the treatment and efficacy of myopia, especially about the long-term effect of excimer laser treatment of myopia, is it possible that the laser treatment will recur in the long term? Here are some questions about this. As you know, the eye is like a high-level and fine photographic machine, its total refractive power is 58.64 degrees, and the cornea on the surface of the eye accounts for 48.38 degrees, so a slight change in the refractive index on the cornea can correct myopia and other refractive errors. The most advanced correction method is to use a femtosecond all-laser myopia treatment system to cut the shape of a spectacle lens on the cornea to correct myopia. This is done by first creating a corneal flap with the femtosecond laser, then cutting it with the laser on the cornea, and later waiting for the corneal epithelium to heal so that the refractive state of the ortho-optic eye is re-formed on the cornea. The refractive index stabilization period after laser treatment generally takes several months, and finally, the refractive state of the corneal surface is fixed and will never change again. What is the reason why some myopic patients’ refractive error is still deepening after laser treatment? Myopic patients should pay attention to the indications for laser treatment before considering treatment, first of all, whether the patient’s own myopic refraction is stable in recent years, if there is no deepening or refractive development within two years does not exceed 1.00D, then the myopic refraction belongs to the stable. Laser treatment is possible and the efficacy will not change after laser treatment. If the opposite of the above, then after laser treatment, the patient’s myopia is still visible on the basis of the original eye refraction in the deepening, and the laser treatment effect is mistakenly considered unstable. Secondly, the age of the myopic patient should be above 18 years old, if the age is small then the myopic refractive error is not yet stable and may deepen after laser treatment, so parents should pay attention to the above factors when considering laser treatment for myopia in their children. According to the literature, excimer laser treatment for myopia has reached more than a million cases in recent years, and the refractive error is stable in more than 96.8%, while refractive regression only accounts for 3.2%, and is mainly caused by the above factors. Therefore, myopic patients with stable refractive error have stable results after laser treatment, while patients with unstable refractive error have unstable results after laser treatment. According to the American ophthalmologist literature, the earliest myopic patients who received excimer laser treatment have been treated for ten years and their myopia correction results are still stable today, so the long-term effect of excimer laser treatment for myopia is stable. Since there are only two methods of correcting true myopia: glasses and surgery, laser treatment is still a relatively safe and effective method with reliable results, providing a reliable guarantee that glasses will be removed for patients with 1.50 to 15.00 degrees of myopia.