In fact, excimer laser is a very short wavelength of 193nm ultraviolet light, which has a photochemical effect rather than a thermal effect with biological tissues, and therefore does not produce thermal damage. In addition, excimer laser has short wavelength, weak penetration, each pulse can only cut 0.25um depth, it is cutting horizontally under the cell, cutting extremely precise. At the same time, advanced excimer laser equipment have infrared tracking system, when your eyeball deflection beyond the normal range, the laser will automatically stop emitting, to ensure safe treatment.
And, it is very safe when the doctor decides to perform the surgery on you after a formal and systematic examination. If one of the checkup items does not meet the requirements, the doctor will not perform the surgery. Eye surgery is very careful, this treatment must be carried out before a detailed and accurate eye examination (preoperative examination includes computerized optometry, intraocular pressure, dilated pupil examination, check the fundus, anterior segment examination, corneal thickening, self-lens detection, and so on many items), as long as the patients who can pass the examination, the operation is very successful, and the results are very ideal.
Currently, more than tens of millions of people around the world have successfully undergone laser eye surgery to correct myopia. The U.S. Food and Drug Administration (FDA) has approved excimer laser to correct nearsightedness, farsightedness and astigmatism as early as 1995, and pointed out that it is both a safe and effective method to treat refractive errors at present. Of course, any surgery carries risks, which can be minimized if you choose a surgeon with extensive surgical experience and a treatment center with advanced laser equipment.
Precision laser keratomileusis (PRK) is a computer-controlled, laser-operated procedure that cuts less than one-tenth of the thickness of the cornea, thereby changing the refractive power of the corneal surface and correcting myopia, hyperopia and astigmatism.
Laser excimer in situ keratomileusis (LASIK) is a combination of microkeratoplasty system and excimer laser, the method is to use microkeratoplasty system to lift the corneal laminae, and then make excimer laser cutting under it. The advantage is that the corneal epithelium and anterior elastic lamina can be preserved, which is more in line with the corneal anatomy and physiology.
Laser excimer epithelial keratomileusis (LASEK) is a new type of laser treatment for myopia for people who can't be treated with LASIK because of their thin corneas. An epithelial flap with a thickness of 60 to 80 microns, a diameter of 8 to 10 millimeters, and a curvature of the tip of the flap of 30 degrees is cut out with an epithelial knife, and the epithelial flap is lifted off, and then the excimer laser is used to perform in-situ grinding and inlaying to improve the refraction of the cornea, then the epithelial flap is reset, and replaced by a new one after four days.
Currently, excimer laser surgery for refractive error correction is mainly based on LASIK, with PRK and LASEK as supplements.
The excimer laser is a corrective surgery for myopia, not a curative surgery for myopia. Excimer laser is the use of human corneal interlayer cutting technology to make a concave lens on the cornea to achieve the purpose of correction. Because excimer laser treatment needs to remove part of the cornea, so we have certain requirements for the patient, the cornea thickness itself is thin people are not suitable for this surgery, high myopia is not suitable for this surgery, myopia has a rapid growth trend of people are not suitable for this surgery, especially myopic patients with fundus lesions, or has occurred a pathological change of the patient is also not suitable. In short, the ability to perform excimer laser corrective surgery must be fully communicated with the doctor, accurately do the preoperative examination and consultation after the choice.
2004-8-1 21:17:21
The standardization of excimer laser surgery is particularly important.
Experts at the Optometry Research Center of the Ministry of Health have combined more than 10 years of theoretical and clinical experience to summarize a set of more complete technical specifications and standards for the entire procedure. The new standard has the following features: First, it emphasizes access, practitioners must have the qualification of ophthalmology attending physician or above in addition to the license to practice medicine, and foreign physicians should have the license to practice medicine issued by the Ministry of Health of China; to
meet the requirement of completing more than 200 surgeries on the eyes of animals. Secondly, it puts forward clear requirements for the area of the operating room and basic facilities, such as standardizing optometry, and having A ultrasound and corneal topography. Third, it standardizes the workflow including pre-operative consultation, pre-operative conversation and signature, surgical procedure, and post-operative observation. Fourth, the indications and contraindications for surgery are clearly required, such as those under 18 years of age, those whose myopia deepens by more than 50 degrees per year, those who are engaged in night driving, and those with severe amblyopia should not be operated.
2004-8-1 21:27:56
The United States to carry out excimer laser surgery more emphasis on personalized programs, such as small spot flying point scanning has become the mainstream technology, which is characterized by a spot of less than 0.8 mm, to improve the accuracy of the treatment; in the development of surgical programs before not only optometry, but also to make a three-dimensional corneal topography. For example, if a person has 300 degrees of astigmatism, but the actual cornea is only 100 degrees of astigmatism, and the patient's long-term effect is not good if he/she has 300 degrees of astigmatism to do the surgery. Nowadays, when some hospitals introduce excimer laser, they don't introduce the 3D corneal topography technology at the same time, which will affect the clinical effect more or less. And American Raysay laser takes the lead in introducing personalized cutting system guided by three-dimensional corneal topography, which improves the accuracy of treatment. Therefore, it is not only necessary for hospitals to buy machines, but also more importantly, to introduce technology, carry out technical training and understand the progress in related fields. The current understanding of refractive error has evolved from a three-level concept of myopia, hyperopia, and astigmatism to a multilevel concept, which is necessary for doctors to formulate treatment plans and strive for more precise surgery.
2004-8-1 21:38:23
Any surgery carries a certain degree of risk, and the safety of LASIK surgery is FDA-approved and very safe. In order to ensure the safety of the pre-operation should be a detailed examination, for example, the cornea is relatively thin people or people who are dry are not very suitable for surgery. In addition, the laser machine used for the surgery must be very sophisticated. The surgeon's skill is also the key to success.
2004-8-1 21:40:38
The following preparations should be made before the surgery:1. Contact lens wearers should remove their lenses at least two weeks before the surgery.2. Anti-inflammatory eye drops should be given routinely 6-8 times a day for three days before the surgery.3. Surgery should be performed during a period of good health, avoiding surgery when you have a cold or fever.4. Odor skin care hair care products, so as not to affect the effect of surgery. 5, the day of surgery do not wear a set of clothes.
2004-8-1 21:58:49
As a mature and most advanced technology in many corneal refractive surgeries, LASIK has unquestionable safety and reliability. At present, there are various models of equipment and assembled machines in the market to mix up the pearls, and in order to make profits, its price is still high, although they do LASIK, but amazingly, some patients have many incredible results, such as undercorrection or overcorrection, glare, etc., after coming to the hospital for examination, but also found corneal penetration, medically derived astigmatism, secondary cone cornea, corneal flap irregularity, flap The examination also revealed corneal penetration, medical astigmatism, secondary conical cornea, corneal flap irregularity, flap free, epithelial implantation, infection and other sequelae that should not have occurred in the regular hospital. Although these problems, if detected in time and effectively treated (individual even need to do corneal transplantation), generally does not leave sequelae and does not affect the results. However, if there is a high degree of hyperopia after overcorrection for myopia, or a high degree of astigmatism, etc., the cornea remaining in the patient after the operation is not thick enough, and cannot be remedied by another operation. Therefore, both doctors and patients should be fully aware of the possible risks of LASIK. That's why it's so important for patients to choose a good hospital and doctor.
Regular brand tertiary hospitals in the best equipment, purified surgical environment, all have the level of induction certificate and level of excellent, experienced medical team, regular medical services, excimer laser system to do LASIK may appear shortcomings factors to a minimum.
Beijing laser myopia surgery center price comparison!
Latest Price of Excimer Laser Surgery by Hospital
Hospital Name Surgery Fee PRK Surgery Fee LASIK Inspection Fee Medicine Fee Specialist Fee Review Fee Total
Tongren 8700 300 500 500 10000
Fuyen 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
Xinli 6800 300 100 7200
Yingzhi Hospital 6000 300 about 300 7000 About 300 7000
People's Hospital 6500 300 6800
Beijing Medical Third Hospital 7000 300 300 7600
Tiantan Hospital 6000 7000
Youyi Hospital 6300 200 7000
Runsight Ophthalmology 4800 102 400 5300
Century Forum Hospital 5200 300 100 5600
Military General Hospital 6320 305 100 6800
Harmony Sempervirens 8600 400 100 9100
Beijing Guanghua Laser Myopia Surgery Treatment Center Myopia Surgery Price List
Guanghua Myopia Surgery Price List (Both eyes before discount)
PRK Surgery Fee 4000RMB Examination Fee 300RMB Post-op Drug Fee 300RMB Total 4600RMB
LASIK Surgery Fee 6000RMB Examination Fee 300RMB Post-op Drug Fee 200RMB Total 6500RMB
LASEK Surgery Fee 6000RMB Examination Fee 300RMB Post-op Drug Fee 200RMB Total 6500RMB
INTACS corneal ring fee 15,000 yuan Examination fee 500 yuan Postoperative medication 100 yuan Total 15,600 yuan
Beijing Guanghua Laser Myopia Center Myopia Surgery Discount Prices
[COLOR=red]Guanghua Myopia Surgery Price List (Single Eye)
PRK Surgery Fee 1000 yuan
LASIK Surgery Fee 2300RMB
LASEK Surgery Fee 2300RMB
INTACS Corneal Ring Fee 13800RMB
Technology has been good, and there are few failures. Generally no problem!