Recently, a number of media and the Internet talk about “myopia lasik surgery for a number of years will produce cone corneas and even cause blindness?” Many young people and parents of students came to the hospital with the newspaper and asked: Will myopia surgery produce cone cornea or even cause blindness? On this issue, I will talk to you about a few points of my opinion. 1, as a member of the Medical Malpractice Appraisal Committee, in the past 10 years of medical malpractice appraisal, I have not encountered a single case of eye blindness caused by myopic surgery. Cone cornea after myopia lasik surgery is indeed a serious complication, but it is extremely rare in the clinic and has a very low incidence. All ophthalmologists are now very concerned about this problem. In the early days of myopia lasik surgery, there were problems with cone corneas. But for 10 years I hardly saw it. In the early days, there may be several reasons: 10 years ago, myopia surgery because of the indications for surgery is not very accurate, while the safety range definition value is low, and even some individual hospitals in pursuit of economic interests, preoperative screening is not strict, relaxed the indications, thus causing individual patients to produce the phenomenon of cone corneas. In short, must go through a strict examination, can do, can not do or reluctantly resolutely do not do. 2, strict pre-operative examination, mastering the indications for surgery, very important. Not everyone can do the surgery, so it is very important to have a strict pre-operative examination. And there are lasik, Epi-lasic, Luck, etc. According to different examination results, choose different surgical methods, in short, for each patient to choose the most suitable and safest method. The key to grasp the following points: 1, corneal topography 2, intraocular pressure 3, corneal thickness 4, history of rapid development of myopia 5, astigmatism larger myopia 6, myopia try not to be greater than 800 degrees. 3, myopia surgery with the machine and the surgeon has a great relationship good machine energy stability, the same 100 degrees, different machines cutting the corneal depth is not the same, the more advanced equipment the more corneal savings. There are also some hospitals that use second-hand equipment that is eliminated, and the performance of the machine is unstable, leading to vision regression and the phenomenon of cone corneas, the majority of myopic patients carefully, do not want to be cheap. The surgeon is also important to have the appropriate qualifications and titles, said after systematic theoretical learning and training, while doing more experienced doctors, the ability to deal with complex problems and complications to be stronger, generally will not have serious problems, the patient is relatively safe. 4, now laminar knife, femtosecond laser, corneal flap can be controlled very well, are able to achieve SBK (anterior subelastic layer cutting) requirements, corneal flap can be completely controlled at about 100 microns. In the past, it was considered safe to leave 250 microns after corneal stromal surgery, and later it was considered safe to leave 280 microns, but in fact most doctors now leave 300 microns or more, so it should still be safe. Some people think that femtosecond laser flap making is better than laminate flap making, but I think there are differences. Femtosecond laser flap making is more uniform and well controlled, but more expensive and more reactive on the first postoperative day; laminate flap making is subject to mechanical failure, which has evolved and is now almost non-existent, moderately priced, and has good recovery of vision on the first postoperative day. In short, the final results of these two methods are good. 5, the U.S. military allows pilots to do LASIK surgery, have done myopia LASIK surgery pilots can fly aircraft, can participate in combat. In short, myopia surgery must be strictly examined before, according to the results of the examination, choose a different method, can do, can not do or reluctantly resolutely do not do, so as to be safe.