Excimer laser surgery can be divided into corneal surface cutting and corneal stromal cutting according to different laser cutting sites, namely LASEK, EPI-LASIK and LASIK; the above procedures can be divided into conventional laser cutting and individualized cutting according to different modes of laser cutting. What is individualized surgery? Individualized surgery refers to wavefront aberration-guided laser surgery combined with iris positioning. Wavefront aberration can be interpreted as the fingerprint identification of the eye, and the aberration of each eye is unique, so the wavefront aberration-guided laser cutting surface is the most accurate and perfect at present; the iris positioning system can minimize the influence of the rotation of the eyeballs during the operation, so that the corneal positioning can achieve the maximum accuracy. The simulated cornea technology allows the patient to feel the postoperative effect before the actual surgery. Therefore, individualized surgery encompasses all the most advanced technologies in the field of excimer technology, which makes the effect of excimer laser surgery reach a qualitative leap. What are the advantages over conventional surgery? Conventional surgery can solve the problem of myopia, hyperopia and astigmatism of patients, but the corneal surface can not be solved for further subtle irregularities, and most of the patients can get satisfactory results through conventional surgery. However, there are a few patients with poor corneal surface regularity, postoperative visual acuity improved, but comfort, clarity and night vision will be a problem, and through individualized surgery using a special small flyspot spot for more fine cutting, can maximize the solution to the above problems. Simply put, the biggest advantage of individualized surgery is its fine cutting and accurate positioning. Can all hospitals or facilities perform individualized surgery? No. We are the first hospital in Hebei province to develop this technology. Not all equipments can do individualized surgery, some of the excimer laser therapies currently used in the market can do individualized surgery, and some can’t. The market share of excimer laser therapies is relatively high. Market share is relatively high in 2004, the United States Nuctech launched the VISXSTARS4 excimer laser therapy instrument, is the earliest can do individualized surgery equipment, and is the only through the U.S. FDA, the Japanese Ministry of Health and Welfare, the European CE, the Chinese State Drug Administration unanimous certification of high-tech products. That is to say that the equipment before 2004 do not have this function.