We know that the phenomenon in which light from the outside world passes through the optical system of the eye and is imaged on the retina in a way that does not accurately reproduce the original shape of an object is called aberration. In our refractive system, there are not only low-order aberrations, which are commonly known as myopia, hyperopia, astigmatism and presbyopia. There are also a variety of higher-order aberrations, such as spherical aberration, coma, and so on. Different higher order aberrations affect the quality of our vision in different degrees. Optical lenses and ordinary LASIK surgery can only correct myopia, hyperopia and astigmatism, which are the lower order aberrations, but not the higher order aberrations. The visual quality problems that may occur after ordinary myopic laser surgery, such as decreased contrast sensitivity, glare, double vision, etc., can be effectively corrected if wavefront aberration-guided “individualized” myopic laser surgery is performed, which not only can effectively correct refractive errors and restore normal vision to the patient, but also can target the removal of higher-order aberrations that impede the patient’s vision restoration and affect the visual quality. It can not only effectively correct the refractive error to restore normal vision, but also remove the higher order aberrations at all levels that hinder the recovery of vision and affect the quality of vision, so as to make the postoperative vision clearer and the quality of vision better. The wavefront aberration technology of VISX Wavescan is a truly “individualized” myopic surgery. Aberration measurements are visualized through low- and high-order aberrations, providing valuable information that is indispensable for preoperative diagnosis, prediction, postoperative vision evaluation, and quality comparison. These wavefront aberration measurements are aggregated with the general myopia laser pre-surgery test information and imported into the excimer laser system via USB flash drive transfer to guide the excimer laser to perform “individualized” scanning. Wavefront aberration-guided excimer laser scanning can reduce the main factors that lead to the increase of higher-order aberrations after surgery, such as laser off-center cutting, corneal cutting surface irregularity, uneven surface, cutting surface too small, cutting too deep, and too large cutting slope, so that the “individualized” laser cutting technology has reached a completely new level.