After myopia surgery, you can take off your heavy eyes, you don’t have to look around for glasses, you don’t have to wipe your eyes again and again on rainy days or when you are unhappy and in tears, and you can see the world clearly when you wake up, with blue sky and white clouds and clear sky at a glance. With the diversification of myopia surgery methods and the continuous upgrading of instruments, the safety and accuracy of surgery are constantly improving, and people not only pursue post-operative vision, but also require improved visual quality. All in all, refractive surgery has largely satisfied people’s eagerness to get rid of their glasses and has brought great convenience to their life and work. However, the other thing is that it is a kind of surgery after all, even if they are full of desire for the surgery, people will worry about the post-operative effect. What is the long-term safety after surgery? Is it more prone to presbyopia? Is it more prone to trauma? Is it impossible to perform other eye surgeries? A series of confusion makes people hesitate to take the first step. 1. What is the post-operative effect? People who have some knowledge of myopia surgery know that myopia surgery is the application of an excimer laser to cut the central corneal tissue and flatten the corneal curvature so that light can be focused on the retina and objects can be seen clearly. It is equivalent to making an “eye” on the cornea to help improve vision, not to cure myopia. Therefore, when patients ask the doctor how much vision they can achieve after surgery, the doctor will tell them that, in general, the vision after surgery is similar to the best corrected vision before surgery. 2. What are the long-term results after surgery? Myopia surgery has only been used in the clinic for more than 20 years, so people can’t help but ask, “Will there be any problems with my eyes 20 or 30 years after the surgery? The so-called rebound, also called regression, is related to the post-surgical corneal trauma proliferation repair, which usually occurs within 6 months after surgery, so the longer the surgery, the lower the chance of rebound, and even if there is a rebound, this increase in prescription is extremely limited and predictable, and generally does not affect vision. In contrast, the increase in prescription within a few years after surgery is mostly considered for other reasons, such as myopia with unstable preoperative prescription that still develops after surgery, or the occurrence of postoperative corneal dilatation or cone cornea (rare, and can usually be screened out by receiving a preoperative examination at a large regular hospital). Since the development of myopia surgery in the 1990s, with the continuous development of examination and surgical instruments and the diversification of surgical methods, the safety as well as the accuracy of surgery has been qualitatively improved, and the majority of patients have gotten rid of their glasses, obtained good vision and improved their quality of life. The direct object of the surgery is only the corneal tissue of the eye, which does not affect other parts of the eye. Cataracts and glaucoma that appear with age are not related to myopia surgery. 3.Is it easy to cause trauma? Before excimer laser cutting, a corneal flap needs to be made, the pain response after lamellar knife – LASIK is light and vision recovery is fast, but the resistance of the flap to external forces is relatively weak after resetting (in most cases, external forces do not affect the position of the flap, unless it suffers from large external forces), such as the use of femtosecond laser corneal flap, due to the cutting surface, cutting angle and cutting thickness is more accurate and uniform, postoperative visual In addition, the repositioned flap fits more securely and is more resistant to external forces. Therefore, myopic patients who have high postoperative requirements, need to join the police academy, or need to participate in antagonistic sports can consider choosing femtosecond laser flap surgery or superficial cutting surgery. 4. Is it easy to get presbyopia? Presbyopia, like skin relaxation and osteoporosis, is a normal physiological phenomenon of human aging, manifested as a decline in the power of adjustment, clear vision at a distance, easy fatigue and even difficulty in seeing near, requiring the assistance of glasses. Farsighted patients have the earliest symptoms, while orthokeratology patients start to experience presbyopia at the age of 40, and according to the eye condition and physical quality, everyone has deviations in the time they wear glasses. Myopia surgery is equivalent to making a pair of “glasses” on the cornea to assist in improving vision, which only solves the problem of myopia. In the past, before the surgery, the glasses were not worn with the full number of degrees, or the glasses could be taken off to solve the problem of nearsightedness, in fact, it was a cover-up of presbyopia. Myopia surgery site in the cornea, excluding other parts, does not affect other eye surgery operations.