China is a large country with a high prevalence of myopia, according to the latest survey by the Ministry of Health, there are 400 million myopia patients in China, of which 67.5% of the total number of teenagers with myopia, and presents a high number, the characteristics of low age. At present, for myopia patients over 18 years old with a stable degree, to get rid of myopia, to achieve safe and effective removal, laser corrective surgery is still the safest and most effective way. ”After excimer laser corneal surgery, in recent years there is a more advanced technology, no scalpel, no corneal flap, the incision is very small, safer, more accurate and more perfect, which is the full femtosecond laser myopia correction.” Zhi Shuping said, the downtown hospital ophthalmology has Xuzhou City, the first all-femtosecond laser equipment – Germany Zeiss VisuMax all-femtosecond laser system, carried out two years, attracting a large number of myopic patients to receive surgery, good treatment effect favored by patients. China’s youth myopia rate has ranked second in the world “Look around us a hidden behind thick glasses lenses doll face, it is obvious to perceive the seriousness of the current youth myopia problem.” Zhi Shuping said that the incidence of myopia in our population is 33%, which is 1.5 times the world average of 22%. According to the latest survey data, the number of myopia in the country is nearly 400 million, and myopia has become the fourth largest blindness-causing eye disease after cataract, glaucoma and diabetic eye disease. Meanwhile, the myopia rate of Chinese teenagers and children is the second highest in the world, with 28% of elementary school students, 60% of junior high school students, 85% of high school students and 90% of college students. According to Ji Shuping, the main causes of myopia among teenagers are related to heavy study load, excessive use of electronic devices and unhygienic use of eyes. Because of the increase in myopia, a large number of teenage patients come to the clinic every weekend, and the annual summer and winter vacations are the peak time for myopia correction for teenagers. The main symptom of myopia is clear vision near and blurred vision far, which has a big impact on the life and work of myopic patients, and it is also extremely inconvenient to wear glasses, said Ji Shu Ping. Therefore, laser myopia surgery is popular among patients for its good safety, effectiveness and stability. ”Now, although it is May, there are already many students who come to consult about myopia correction surgery, some of them want to be soldiers, some are applying for university requirements, and there are graduates who are preparing for job hunting.” The Xuzhou Central Hospital Ophthalmology Zhi Shuping Zhi Shuping introduced that laser myopia surgery is only suitable for people above 18 years old with a more stable degree, and for teenage students under 18 years old with unstable myopia, it is recommended to correct with glasses, usually to limit the time to use electronic products, often relax the eyes, delaying the myopia deepening. Excimer laser surgery is safe and effective and is still being performed Excimer laser refractive corneal surgery has been widely performed around the world since the 1990s and has achieved remarkable results over the past 20 years. The low cost of the equipment and the lower price of the procedure compared to the femtosecond laser are the advantages of this procedure, which is still being performed. However, there are still a few people who are worried about the safety of the surgery due to misleading certain public opinions in the previous period. Here, Zhisuping emphasized that “excimer laser surgery is safe.” However, with the continuous upgrading of equipment and improvement of surgical methods, complications have become rare, and the introduction of a series of guidelines on refractive surgery has standardized the surgical examination and procedure, which has ensured the safety of the surgery. The safety of the surgery is ensured. ”Recently, our ophthalmology hospital has built a new 10,000-grade laminar flow operating room with the highest degree of purification, and introduced the latest generation of excimer laser equipment from Zeiss Germany, which can apply the flying dot scanning system for corneal cutting, plus the active tracking system for iris and pupil positioning, which can make the surgery more accurate. I have performed tens of thousands of patients since I started laser correction surgery in 1998, and none of them have had any significant complications so far.” In addition, for patients who are concerned about the future effects of the procedure, she said, “such concerns are unnecessary” because the excimer laser only cuts a thin layer between the layers of the cornea and does not damage the intraocular structures in any way, and the effect of the excimer laser on vaporizing tissue cells is transient and superficial and will not produce any adverse effects over time. There are no adverse effects with age. However, it should be reminded that myopic eyes, especially highly myopic eyes, are more prone to pathological changes than normal eyes, and although laser surgery does not contribute to the development of pathology, it does not prevent it. Therefore, once your vision has improved, it is important to check your eyes regularly, especially the condition of the fundus, so that complications of myopia can be detected and treated in a timely manner. In the course of the development of myopia laser surgery, the surgical equipment has been constantly updated and improved, and the surgical methods have also been improved and matured, from “knife” to “knife free”, from “laser” to “all laser”. Laser” to “all-laser”, from “invasive” to “minimally invasive”. In recent years, the femtosecond laser has brought myopia surgery into the blade-free, minimally invasive era. For many people who want to do myopia surgery, it is often not clear what the differences are between femtosecond laser and traditional excimer laser, as the same myopia surgery. The femtosecond laser procedure does not require a scalpel, and the post-operative night vision is better and the visual quality is more perfect, as well as safer and more personalized, said Ji Shu Ping. She said that 80% of the risk in traditional laser surgery is in the process of making the flap, because the traditional flap making process is done by a person operating a metal keratome, and human error and mechanical failure cannot be controlled. Femtosecond laser flap making has several advantages. First, it significantly reduces the risk of the procedure. In traditional laminar knife surgery, if the blade rotates during the process of negative pressure ring loosening and other accidents, the production of corneal flap will completely fail, the surgery can only be done three months later, which brings great psychological pressure to patients and doctors. In the case of a similar accident with the femtosecond laser, the surgeon can simply put the negative pressure ring back on and immediately replenish the laser without interrupting the surgery. Because the femtosecond laser only produces some water and bubbles to push away the corneal tissue when creating the flap, there is no damage to the tissue, and multiple surgeries can be performed on the same affected area, greatly improving safety. Second, the embedded corneal flap is more accurately reset. The lamellar knife is a horizontal cut, and the surface of the eye is a sphere, so the flap profile is “cup and lid” type, and the adhesion with the eye matrix is not good enough; while the corneal flap made by femtosecond laser is embedded with the eye matrix in the “underground well lid” type. It is easy to reposition the flap and the stroma in a “subterranean manhole cover” type of embedded occlusion, so there is no misalignment and no complications such as flap fragmentation or button flap. Also, the laser light source avoids metal debris residue that may be caused by the use of laminates. In addition, it avoids medical-derived infections. Many small laser eye institutions in the implementation of LASIK surgery, in order to reduce the cost of surgery, did not strictly implement the “one person, one blade” principle, will be repeatedly used disposable surgical blade, greatly increasing the cross-infection and other medical risks, femtosecond laser makes the first time in human corneal surgery away from the lamellar knife, the surgical process occurred Cross-infection during surgery is now history. In July 2012, the city’s best all-femtosecond laser surgery station, which was introduced by the Downtown Hospital with an investment of more than 12 million, was put into use. As the most cutting-edge technology in the international treatment of myopia, this technology has been successfully used in the downtown hospital and immediately received wide attention from the industry. Many people, including those from neighboring cities, have come here to successfully remove their myopia glasses. What is the full femtosecond laser? Ji Shu Ping introduced that it refers specifically to FLEX and SMILE, or femtosecond small incision corneal stromal lens removal, in the field of refractive surgery, so that laser flap making and corneal stromal lens removal are done by the same femtosecond laser. Director Ji introduced, although the classical surgical method of making corneal flap and excimer laser ablation of refractive error has been very mature, but the existence of corneal flap is always the drawback of this surgical method, it destroys the integrity of corneal physiological structure, weakening the biomechanics of the cornea, and it is easy to cause corneal flap displacement after eye trauma. “This procedure is called microincision corneal stromal lenticule excision, or SMILE, or “smile surgery,” in which the femtosecond laser performs two separate scans of the corneal lamina at different depths to complete a complete The surgeon uses special instruments to separate and remove the femtosecond-shaped lenticular tissue along the microincision. It is a minimally invasive procedure that does not involve the process of corneal flap making and flap lifting, avoiding the risk of corneal flap complications, minimizing the damage to the corneal physiology, and obtaining better visual results. Since the integrity of the corneal nerve is preserved, the occurrence of postoperative dry eye is also avoided. It is especially suitable for people who are vulnerable to trauma, such as the military and athletes. ”Full Femtosecond” laser surgery is one of the most advanced modes of keratoconus surgery in the world, which brings the safety and precision of myopia correction to a new level. Due to the high development cost and difficult technical bottleneck, only the Zeiss “full femtosecond” laser can be used in “full femtosecond” myopia correction surgery. ”The company’s main goal is to provide the best possible solution to the problem. Femtosecond laser adapts to the crowd Zhi Shu Ping said that all patients who are suitable for LASIK myopia surgery can receive this surgery, in the past there are five types of people who can not do traditional myopia surgery can choose femtosecond all-laser surgery, its scope has been expanded, mainly the following: 1, before because of thin cornea, myopia and high degree of myopia can not do myopia surgery, 10% of patients can do femtosecond laser The flap-making myopia surgery. 2, before because of the small eye fissure, small corneal diameter, flat corneal people, and can not use mechanical metal knife flap making people can also do femtosecond laser. 3, Femtosecond laser is also the first choice for augmentation surgery after undercorrection and overcorrection after normal myopia surgery. 4, for patients who are afraid of cutting the cornea with a mechanical metal corneal lamellar knife is the most suitable for this surgery. 5, For those who have high requirements for surgical results, it is recommended to do femtosecond laser as well.