In the fall, many young people come to the hospital seeking laser surgery to improve their vision so they can pass the military draft. To achieve the desired outcome, we must take a scientific approach to understanding the many facets of excimer laser treatment for myopia. The excimer laser is a precisely focused and controlled ultraviolet beam that cuts with great precision, and its cold light source is non-invasive to the surrounding tissue. The excimer laser’s ability to precisely cut tissue is used to reshape the corneal curvature with the beam to correct myopia. The laser emits a series of laser pulses to the cornea, cutting a smooth plane in the center of the cornea, removing a thin layer of central corneal tissue with each pulse, and then flattening the curvature of the cornea with multiple pulses, allowing the light to focus directly on the retina, resulting in clear vision. Before excimer laser cutting, we first make a flap on the corneal surface, and depending on the depth of the flap, there are two types of excimer laser surgery: thick and thin flaps, namely LASIK and LASEK/Epi-LASIK. Epi-LASIK uses a special miniature corneal epithelial knife to make a corneal epithelial flap, and the subsequent procedure is the same as LASEK. All three use excimer laser to reshape the cornea to achieve correction of myopia, hyperopia and astigmatism. LASIK is a thick stromal flap that completely preserves the epithelial and anterior elastic layers, so there is almost no postoperative pain, fast vision recovery, and small fluctuations in prescription, but the flap-making process is more traumatic to the cornea, requires higher corneal thickness, and is relatively less resistant to future trauma; LASEK/Epi- LASIK is an epithelial flap, which preserves the epithelium but has slight damage, and the laser destroys the anterior elastic layer, so there will be slight pain after surgery, and vision recovery will have to wait for the epithelium to be completely repaired, and this process usually takes about 10 to 14 days, but the operation of LASEK is safer, and there is almost no damage to the cornea, so there is no worry even if there is trauma in the future, especially for those who have thin corneal thickness and cannot undergo LASIK. It is especially suitable for patients whose corneal thickness is too thin to undergo LASIK. In the design of the excimer laser cutting pattern, the prevailing principle is broad individualization, where all parameters must be included, and factors such as age and occupation and even outdoor hobbies must be considered in the design of the surgical plan. Some patients need a map-guided cut after corneal computer analysis, and some patients need to adjust the cut according to the overall aberration of the eye, i.e. aberration-guided cut. Just as some people have myopia without astigmatism and therefore do not need a toric lens, a significant number of myopic patients do not require aberration-guided patterns. Myopic laser surgery for young people is unique, especially if they are going into careers that involve confrontational training, fighting, sports or other sports, public security, aviation, etc. It is important to consider the surgical approach and options thoroughly. For example, should you choose a thick or thin flap? Should we eliminate the like differential guidance pattern? For example, Xiao Wang came to our hospital for myopia treatment because he failed to pass the vision test for the Public Security Armed Police, and wanted to have painless LASIK surgery after reading the advertisement. Although there is slight post-operative pain and relatively slow recovery of vision, the temporary inconvenience is replaced with permanent safety, because for low myopia, LASEK works better than LASIK, and Wang no longer has to worry about his corneal flap injury during training in the future. Another example is that Xiao Li has 900 degrees of myopia and has been examined in several hospitals, but all said that the cornea is too thin to do myopic laser surgery, so he has been very distressed, and this time he came to our hospital for military medical examination. After consultation and discussion, it was decided to do Epi-LASIK with a thin flap for Xiao Li, so that the postoperative corneal stromal thickness was retained at 360 microns or more, which ensured the safety of the cornea after surgery, and Xiao Li achieved a naked eye vision of 1.0 or more after surgery. For some people who are engaged in special occupations or have special requirements, it is especially important to consider some side effects after excimer laser surgery when designing the surgery. For example, patient Yao is a driver and often drives at night. Considering that myopic patients will experience night vision loss and glare after surgery, we designed a cutting pattern for Yao with an optical zone of 7mm, which optimizes spherical aberration and saves corneal tissue, and the dark pupil of a normal person is about 6.5-7mm, so that Yao will not be disturbed by glare even when driving at night. Of course, for some patients with particularly large dark pupils, even more than 8mm, since the surgical optical zone cannot be that large, caution should also be exercised when considering surgery, and be prepared for the possibility of nighttime glare. After more than a decade of development. Excimer laser treatment for myopia is already a mature and reliable technology, but we should also be rational about the results it can achieve and the potential risks it can bring, after all, it is not perfect yet. However, for patients with high vision requirements or those who may be engaged in special occupations in the future, they should consider carefully whether they can bear the risks associated with the surgery, taking into account their actual situation. Patients who are still vague about the concept of excimer laser surgery and have insufficient knowledge should go to large hospitals and regular medical institutions for consultation and treatment, and should not believe in advertisements and irresponsible propaganda and undergo some cheap and so-called “preferential” surgery, leaving themselves with lifelong regrets.