In fact, excimer laser is short-wave ultraviolet light with the wavelength of 193nm, which has photochemical effect rather than thermal effect with biological tissues, so it will not cause thermal damage. In addition, the excimer laser has short wave length and weak penetration, and each pulse can only cut the depth of 0.25um, and it can cut transversely under the cell, which is extremely accurate. At the same time, advanced excimer laser equipment has an infrared tracking system. When your eyeball deflects beyond the normal range, the laser will automatically stop emitting to ensure the safety of treatment.
Moreover, after routine system examination, the doctor decided to operate on you, which is very safe. If one of the tests does not meet the requirements, the doctor will not perform the operation. Ophthalmic surgery is very cautious. Before this treatment, detailed and accurate ophthalmological examination must be carried out (preoperative examination includes computer optometry, intraocular pressure measurement, mydriasis examination, fundus examination, anterior segment examination, corneal thickness measurement, self-made examination, etc.). As long as the patient can pass the examination, the operation is very successful and the effect is ideal.
At present, more than tens of millions of people around the world have successfully performed laser myopia correction surgery. The US Food and Drug Administration (FDA) has approved excimer laser to correct myopia, hyperopia and astigmatism as early as 1995, and pointed out that it is a safe and effective method to treat ametropia at present. Of course, any operation is risky. If you choose a doctor with rich surgical experience and a treatment center with advanced laser equipment, you can minimize the risk.
Excimer laser corneal refractive correction (PRK) is controlled by computer, and the corneal thickness is less than one tenth by laser surgery, thus changing the refractive power of the corneal surface and achieving the purpose of correcting myopia, hyperopia and astigmatism.
Excimer laser in situ keratomileusis is a combination of micro-keratomileusis system and excimer laser. The method is to uncover the corneal lamina with a micro-keratomileusis system, and then cut it with excimer laser. Its advantage is that it can keep corneal epithelium and anterior elastic layer, which is more in line with corneal anatomy and physiology.
Excimer laser subepithelial keratomileusis (LASEK) is a new type of laser surgery, which is used to treat myopia patients who cannot be corrected by LASIK surgery because of their thin cornea. First, an epithelial flap with a thickness of 60 ~ 80 microns, a diameter of 8 ~ 10 mm and a pedicle curvature of 30 degrees was cut with an epithelial knife. After epithelial exposure, excimer laser in-situ grinding was used to improve corneal refraction. Then, the epithelial flap was reset and replaced by a new epithelium four days later.
At present, LASIK is the main excimer laser refractive surgery, supplemented by PRK and LASEK.
Excimer laser is a corrective operation for myopia, not a therapeutic operation for myopia. Excimer laser uses the cutting technology between human corneas to make a concave lens on the cornea to achieve the purpose of correction. Because excimer laser therapy needs to remove a part of cornea, we have certain requirements for patients. People with thin corneal thickness are not suitable for this operation, people with high myopia are not suitable for this operation, and people with rapid myopia growth are not suitable for this operation, especially those with fundus lesions or lesions. In short, whether excimer laser correction surgery can be performed must be fully communicated with the doctor, and the preoperative examination must be accurate before making a choice.
2004-8- 1 2 1: 17:2 1
The specification of excimer laser surgery is particularly important.
Experts from the Optometry Research Center of the Ministry of Health, combined with more than ten years of theoretical and clinical experience, summed up a set of relatively perfect technical norms and standards for the whole operation. The new standard has the following characteristics: First, it emphasizes access. In addition to practicing doctor's license, practitioners must also have the qualification of attending ophthalmologist or above, and foreign doctors must have the doctor's license issued by the Ministry of Health of China; ask
Meet the requirements of completing more than 200 operations on animal eyes. Second, it puts forward clear requirements for the area and infrastructure of the operating room, such as standardized optometry, A-ultrasound and corneal topography. The third is to standardize the workflow including preoperative consultation, preoperative conversation signature, surgical process and postoperative observation. Fourth, the indications and contraindications of surgery are clearly required. For example, people under 18 years old, whose myopia deepens by more than 50 degrees every year, who drive at night and have severe amblyopia are not suitable for surgery.
2004-8- 1 2 1:27:56
In the United States, excimer laser surgery emphasizes more personalized programs, such as small spot flying spot scanning, which has become the mainstream technology. Its characteristic is that the spot is less than 0.8 mm, which improves the accuracy of treatment. Before making a surgical plan, not only optometry, but also three-dimensional corneal topography should be made. For example, someone's optometry is 300 degrees astigmatism, but the actual astigmatism on the cornea is only 100 degrees. If the operation is performed at 300 degrees, the long-term effect of the patient is not good. At present, some hospitals introduce excimer laser, but not three-dimensional corneal topography technology, which will affect the clinical effect more or less. Lei Sai Laser is the first to introduce a personalized cutting system guided by 3D corneal topography, which improves the accuracy of treatment. Therefore, hospitals should not only buy machines, but also introduce technology, conduct technical training and understand the progress in related fields. At present, the understanding of ametropia has developed from three levels of myopia, hyperopia and astigmatism to a multi-level concept. Doctors should have a multi-level concept when making treatment plans, so as to make the operation more accurate.
2004-8- 1 2 1:38:23
Any operation has certain risks. The safety of LASIK surgery is FDA-certified and very safe. In order to ensure safety, detailed examination should be done before operation, such as people with thin cornea or dry cornea, which are not suitable for surgery. In addition, it is required that the laser used for surgery must be very precise. And the skill of the surgeon is also the key to success.
2004-8- 1 2 1:40:38
The following preparations should be made before operation: 1. Contact lenses should be removed at least two weeks before operation. 2. Drop anti-inflammatory eye drops regularly three days before operation, 6-8 times a day. 3, surgery should be chosen during the period of good health, avoiding surgery when you have a cold or fever. 4. Don't wear makeup on the day of operation, and don't use skin care products and hair care products with pungent smell, so as not to affect the operation effect. 5. Don't wear a pullover on the day of operation.
2004-8- 1 2 1:58:49
In many corneal refractive surgery, LASIK, as a mature and advanced technology, has unquestionable safety and reliability of curative effect. At present, there are various types of equipment and assembly machines on the market, and their prices are still high to make profits. Although they also do LASIK, it is surprising that some patients have many incredible results, such as undercorrection or overcorrection, glare and so on. After coming to the hospital for examination, we also found corneal perforation, iatrogenic astigmatism, secondary keratoconus, irregular corneal flap, flap detachment and epithelial implantation. Although these problems are found in time and handled effectively (some even need corneal transplantation), they generally do not leave sequelae and will not affect the effect. However, if hyperopia or high astigmatism occurs after myopia correction, and the corneal thickness left by the patient after surgery is not enough, it cannot be remedied by reoperation. Therefore, doctors and surgeons should be fully aware of the possible risks of LASIK surgery. Therefore, it is very important for patients to choose good hospitals and doctors.
With the best equipment, clean operating environment, all qualified and experienced medical personnel and regular medical services, excimer laser system minimizes the possible shortcomings in LASIK surgery.
Beijing laser myopia surgery center price comparison!
The latest price of excimer laser surgery in hospital
The name of the hospital: PRK surgery, LASIK examination, medicine and expert review.
Tongren 8700 300 500 500 10000
Fu jen 5760 386.5 100 6246
Huade 4250 450 100 800 40 5600
306 Hospital 5500 200 200 5900
Armed Police General Hospital 5500 300 100 5900
Fukang ophthalmology 6500 300 100 6900
Sony 6800 300 100 7200
Yingzhi Hospital is about 6000 300, about 300, about 300 7000.
People's Hospital 6500 300 6800
Beijing Third Hospital 7000 300 300 7600
Tiantan Hospital 6000 7000
Friendship Hospital 6300 200 7000
Runshi Ophthalmology 4800 102 400 5300
Millennium Monument Hospital 5200 300 100 5600
General Hospital of Military Region 6320 305 100 6800
Sheikh Mei Sen 8600 400 100 9 100
Beijing Guanghua laser myopia surgery treatment center myopia surgery price list
Guanghua myopia surgery price list (before eyes are discounted)
PRK surgery costs 4000 yuan, examination costs 4600 yuan, and postoperative medicine costs 300 yuan, a total of 300 yuan.
LASIK surgery costs 6000 yuan, examination costs 6500 yuan, postoperative medicine costs 300 yuan, examination costs 200 yuan.
The cost of LASEK operation is 6000 yuan, the cost of examination is 6500 yuan, and the cost of medicine after 300 yuan operation is 6500 yuan.
The corneal ring fee of INTACS 15000 yuan, the postoperative examination fee of 500 yuan 100 yuan, and the total cost 15600 yuan.
Preferential price of myopia surgery in Beijing Guanghua laser myopia center
[COLOR=red] Guanghua myopia surgery price list (single eye)
The cost of PRK operation is 1000 yuan.
LASIK surgery costs 2300 yuan.
LASEK surgery costs 2300 yuan
INTACS corneal ring fee 13800 yuan.
Good technology, few failures. Generally no problem!