At present, there are two kinds of laser myopia surgery. One is called laser keratectomy (PRK), in which the laser repairs the corneal surface. It is only suitable for myopia below 6.00D d. If the myopia degree is too high, PRK will easily cause corneal scar opacity. Another operation is called laser corneal interlaminar inlay (Lasik), which uses a special knife to split the corneal interlaminar to make corneal flap, and uses laser to repair it in corneal stroma. Both high myopia and low myopia are suitable, the operation is difficult, and corneal flap complications are easy to occur. My two daughters and I both had laser myopia surgery, and the results were good, but when asked about our feelings, my sister said, "I don't regret it." My sister said, "I don't regret it. I will never do it again after I die." It can be seen that laser myopia surgery has advantages and disadvantages!
Pro: 1 is the safest and most reliable method to correct myopia at present. Whether it is reported at home and abroad or our own experiments, the long-term stable naked eye vision after surgery is 92%≥0.5 and 70%≥ 1.0 for myopia patients below 6.00D d. For high myopia above 6.00D, the higher the degree of myopia, the worse the long-term effect after operation.
2. Compared with the equipment and technology fees of advanced countries like the United States, Germany and Japan, the domestic surgery fees are very low, only those countries 1/4- 1/6.
3. Domestic doctors have rich clinical experience. According to preliminary estimates, there have been more than 300,000 surgical cases. Because of its high technology and low price, many foreigners have been attracted to China for surgery.
4. Come on. Laser irradiation takes only tens of seconds without hospitalization.
Disadvantages: 1, the surgical effect is not perfect, there are always a few surgical patients with complications, and some patients even have serious complications such as infection and eyeball perforation, resulting in decreased corrected vision or even blindness. Because laser surgery is performed on healthy eyes, the vision of this eye can be completely restored with corrective glasses. If the vision drops due to surgery, it will not be worth the loss. From this perspective, surgical patients are adventurous. Both doctors and patients should think twice before making up their minds to have an operation.
2. At present, the development of laser myopia surgery in China seems a bit excessive. A few units use commercial operation, advertising exaggerates, and do not work hard at the technical level, which increases the possibility of complications.
3. Excimer laser equipment and technology are still developing, and a few units can't keep up with its development, which makes patients suffer undue losses.
-
Author: Many patients ask whether LASIK will rebound after operation.
Du Zhiyu: LAISK surgery permanently changes corneal curvature, and surgery will not rebound. The effect is more reliable for moderate and low myopia below 600. However, for high myopia, especially ultra-high myopia, the eyeball development is still stable at a young age, and there may be development after surgery, which is the re-development of myopia, not the rebound. For example, eyes can't be used correctly after laser surgery, even people with completely normal vision will have problems with their eyes, so it is very important to take care of their own eyes after surgery.
Authors: At present, the hospitals that can do excimer laser myopia surgery are uneven, and the prices are quite different. What is the reason?
Du Zhiyu: At present, there are nearly 600 hospitals in China that can do this kind of surgery, which is basically promoted in various regions. Due to the limitation of hospital equipment, medical resources, hospital level and regional health policy, the price of this operation varies greatly, and the competition among hospitals also causes great price fluctuations.
Author: Huaxia Myopia Network, as an alliance of 400 excimer laser myopia surgery hospitals in China, has built a bridge between patients and hospitals, providing detailed consultation and surgery appointments for myopia patients free of charge, which can be said to have played a more important role in the excimer industry in China.
Du Zhiyu: I have been to your website, which is very professional, especially the hospital information, which is quite detailed. We also hope that you can correctly guide myopia patients all over the country and make some contributions to their bright recovery. At the same time, I also hope that your website will become a friend of our doctor and provide a free and centralized academic exchange platform. I wish you better and better!
Discussion on excimer laser myopia surgery
Laser myopia surgery originated from 1983. Physicians at Columbia University in new york, USA, first used excimer laser in myopia surgery, and excimer laser myopia surgery developed rapidly in the late 1980s and 1990s. 1995-2000, the US Food and Drug Administration successively approved excimer laser to treat high myopia, astigmatism and hyperopia. At present, excimer laser surgery for myopia has been carried out for 15 years, and China excimer laser surgery for myopia started at the same time as abroad. Since 1992, the Ministry of Health has held a demonstration meeting on excimer laser surgery for myopia, and under the clinical verification of 1993 in two hospitals in Beijing, the stability, effectiveness and safety of the surgery have been fully affirmed, thus setting off the climax of myopia correction surgery. Today, there are 600 medical institutions in China that can carry out myopia laser surgery, with nearly 6,543,800 employees and 3 million patients undergoing excimer surgery.
Why is this technology so popular in such a short time? The author understands the "truth" with doubts about the word "surgery":
Before understanding excimer surgery, let's first understand the principle of myopia. Myopia is simply that the light passes through the cornea and the imaging point falls in front of the retina, thus forming a distorted and blurred image. Here, the human cornea acts as an optical lens. For myopia patients, wearing optical glasses actually changes the projection direction of external light, so that the image points are imaged on the retina. Achieve the effect of clear vision. Excimer laser surgery, on the other hand, starts from the inside, and uses the laser with the wavelength of 193 nm to cut the corneal stroma safely, thus forming natural glasses and achieving the goal of radical cure of myopia.
The author, like everyone else, is particularly cautious about the concept of "surgery", not to mention operating a knife in the extremely fragile eyes of the body. However, with the author's on-site observation of the operation, this idea was completely dispelled.
At present, there are several kinds of excimer laser surgery: 1, excimer laser photorefractive keratectomy (PRK) 2, excimer laser in situ keratomileusis (LASIK) 3, and excimer laser corneal epithelial keratomileusis (LASEK). Among them, LASIK is the most common operation and the mainstream operation in China market at present. What the author observed was a LASIK operation. After strict eye examination in the hospital, the patient enters the operating room, opens the eyelid with an "eyelid opener", fixes the eye ring, carries out local anesthesia, and emits laser under the control of the computer (the time for each eye to emit laser is about tens of seconds). Then, he washed his eyes and put on a small eye patch. Ten minutes before and after the operation.
In the author's interview with operators, all operators are a concept, that is, they enter the operating room with abnormal tension and fear, and leave the operating room with surprise and relaxation. What you told me was one sentence: I didn't expect it to be so soon!
Then I learned more from the surgeon. LASIK pays attention to surgical examination, but the operation itself is relatively simple. As long as you pass the exam, the operation is generally no problem, so please pay attention to the process and results of the exam. In addition, LASIK surgery itself has many taboos:
1, eyes with infectious inflammation, keratoconus, glaucoma, cataract.
2, diabetes, collagen diseases, autoimmune diseases (such as AIDS)
3. Scar constitution
At the same time, the operation also has its adaptive population range:
1, generally at 18-50 years old.
2. The myopia degree is stable
3 100 -3000 degrees
Most patients can see within 24 hours after LASIK operation and can drive within 2-3 days. The first day after LASIK, you can return to normal life. Due to different personal living conditions, it is recommended not to use cosmetics in the eyes, not to take part in strenuous exercise such as swimming or work in a dusty environment for one month.
The author lamented that I finally understood the so-called "eye surgery" concept, and that almost horrible thing was so simple. With the popularity of myopia surgery, more and more people go to the hospital because of different needs. At the same time, we are also pleased to see that this technology is becoming more and more mature. We sincerely hope that all people who are tired of glasses in the world can take off their glasses safely, get rid of the fuzzy world and keep their eyes clear!