As one of the most advanced surgical procedures for the treatment of myopia, myopic laser is favored by more and more myopic patients, and some of myopic friends are hovering outside the door of enjoying clear vision because of the safety. Is the surgery really knife free? How does each step of the surgery work? As the saying goes, “You can’t get half a grain of sand out of your eye”, so if you want to operate on your eye, you can’t afford to be sloppy. The reason why you are shying away from myopia surgery is not only because you don’t understand myopia surgery, but also because you are worried about the safety of myopia surgery. The reporter came to Wuxi Eighth People’s Hospital today with these questions to interview Hu Zhengzai, director of the Refractive Eye Center of the Eighth People’s Hospital in Wuxi. Reporter: Is femtosecond laser myopia surgery safe? Director Hu: Femtosecond laser technology has now reached a higher stage of development. The increasing frequency of the femtosecond laser emission makes the laser energy smaller and smaller, and the possible adverse effects on the cornea are reduced to the lowest level that can be achieved with the current technology, and its safety is also the highest. In ophthalmic laser surgery for myopia, about 80% of the risk of the surgery occurs during the process of making the corneal flap. However, the introduction of the FS200 femtosecond laser, which is “blade-free”, has largely solved this problem. Therefore, the safety is quite high, please rest assured that patients. Reporter: Will my eyesight rebound after the femtosecond laser myopia surgery? Director Hu: The effect of myopic laser surgery can be maintained for life, according to the patients who have had successful surgery confirmed that the vast majority of patients have very good results, have removed glasses, and very stable, generally patients wearing glasses before surgery, the degree of stability, the post-operative effect will also be stable, in addition, after surgery to pay attention to eye hygiene, not fatigue eye is also an important factor in the post-operative effect of stability. Reporter: How long does the whole process of femtosecond surgery take? Director Hu: The surgery usually takes 8-10 minutes. Reporter: How long does it take to recover after myopic laser surgery? Director Hu: (1) basic recovery of normal vision: the majority of patients with mild and moderate refractive error can basically recover the next day, but close work should be minimized, and each work time should not be too long (within 1 hour is appropriate), interval rest about 5-10 minutes. At this time, daytime driving can be resumed, but it is appropriate not to cause visual fatigue. Night driving is strictly prohibited during this period. (2) Resumption of night driving: Patients with mild or moderate refractive error are about 1 month postoperative, when postoperative eye medication has stopped and vision is basically stable. However, for individual patients, evening glare may occur after surgery, so it is necessary to wait for the glare symptoms to disappear before resuming night driving. (3) One month after surgery, when the use of hormonal eye medication has been stopped, most patients can gradually resume their daily work life and sports. Reporter: Which myopic patients are suitable for femtosecond laser? Director Hu: Whether or not you can do femtosecond laser surgery depends on the preoperative examination to determine. (1) The range of refraction: myopia generally does not exceed -12.OOD (1200 degrees) (PRK preferably does not exceed -6.00D); astigmatism generally does not exceed 6.00D (600 degrees). (2) Age: generally 18 years of age or older. (3) Corneal thickness: greater than 450um. (4) Refractive stability: relatively stable refractive error over the past 2 years, with an annual increase in refractive error of no more than 0.50D (50 degrees). Reporter: What is individualized myopia surgery? Director Hu: Each eye is different and the corneal topography or wavefront aberration results are unique, just like fingerprints. The so-called individualized surgery means that under the guidance of wavefront aberration or corneal topography, special equipment is needed to design a laser cutting plan that is accurate to 1 micron according to the precise results of corneal topography or wavefront aberration of each person, and then the results are introduced into the excimer laser, which will cut each eye precisely according to the plan. The most advanced form of myopia treatment is the individualized femtosecond laser. The individualized femtosecond laser is a combination of femtosecond laser, wavefront aberration and iris positioning, and it is more suitable for a wider range of people, even some patients who cannot have normal myopia surgery can have this surgery, and the post-operative effect is very good, night vision, glare problems can be solved, and can meet the requirements of each person or even each eye. Reporter: Will cataracts or glaucoma be caused after the femtosecond laser myopia surgery? Will it affect older eye surgery? Director Hu: Femtosecond laser myopia surgery only reshapes the superficial surface morphology of the cornea by laser, without changing other structures of the eye, and will not cause cataract or glaucoma, nor affect the diagnosis and treatment of eye diseases. Wuxi Eighth People’s Hospital Ophthalmology Center is the designated hospital for “Cataract Restoration Project” in Jiangsu Province, the designated hospital for cataract surgery under the “Bright Eyes Action” policy of Wuxi Civil Affairs Bureau and Wuxi Charity Federation, the designated hospital for medical examination of middle and high school in Wuxi, and the only designated hospital for medical examination of military conscripts in Wuxi. The only designated hospital for military conscription medical examination. Specialist appointment hotline: 0510-81856666