With the widespread development of refractive surgery, especially myopic surgery, more and more people are benefiting from this surgery, but there are also many patients who cannot choose keratoconus because of high refractive error, thin corneas or abnormal corneal morphology, and in the past these patients could only continue to wear lenses. In recent years, with the improvement of materials and production process, intraocular refractive surgery has also gained great development, filling the shortage of keratoconus surgery, the following is a brief introduction to the advantages and disadvantages of intraocular refractive surgery. Advantages: Can correct ultra-high myopia (-8.00 to -10.00D or higher; is the first choice for high, moderate and even low myopia patients with insufficient corneal thickness; is safer for patients with abnormal corneal morphology; can obtain better visual quality compared to keratomileusis, so it is preferred for some patients with high visual quality requirements; does not require removal of corneal tissue, and can maintain intact eye The best corrected visual acuity can be achieved in more than 98% of patients and exceeded in more than 50% of patients; more stable and reversible after surgery. The biggest advantage of this procedure is that it is reversible and can be removed or replaced in special cases. Disadvantages: Possible short-term (usually 1-3 days) increase in intraocular pressure; clouding of the anterior lens capsule: rare; some patients experience nighttime glare; higher cost. Overall, it seems that the widespread availability of this procedure in recent years is related to the fact that the procedure can achieve better and more stable results, but it also limits the options for some patients due to the high cost. It is believed that in the future, as the price decreases, this procedure will offer opportunities to more patients.