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Excimer Laser is a kind of ultra-ultraviolet cold laser with a wavelength of 193nm. The laser light excited by the laser can precisely act on the molecular bonds of the cells, making the tissue Molecular vaporization, each laser can accurately cut the cornea at a depth of 0.25 microns, changing the corneal diopter after removing the quantitative corneal stroma tissue, Flatten the curvature of the central cornea so that the light pas*ing through the cornea can be correctly focused on the retina to achieve the effect of correcting the refractive state of the eye. LASIK (Laser in situ keratomileusis) is the most rapid and stable postoperative recovery for various corneal refractive procedures. It is the mainstream of refractive surgery today. The postoperative recovery period is short, and patients usually go to work normally on the second day after surgery. Postoperative pain is extremely low. PRK laser refractive keratectomy: (same as LASEK) PRK (photorefractive does not require the creation of a corneal flap, which saves corneal tissue. The postoperative dryness of the eyes is lower. LASIK (Laser in situ keratomileusis) has two kinds of corneal flaps The production method (layer knife or femtosecond knifeless laser), and whether there is a need for iris positioning of Fourier pre-guided waves, divided into basic, advanced and high-order, a total of four surgical methods. PRK (photorefractive keratectomy There are two types of surgical procedures for the presence or absence of iris-guided Fourier anterior guided waves, which are divided into basic and advanced types. iLASIK is currently a high-order excimer laser refractive surgery method, whether it is the establishment of iLASIK surgery center, or To perform this operation, it is subject to strict certification by the original VISX factory. According to the foreign original manufacturer's identification, to be called full laser myopia surgery, the following qualifications are required: Laser myopia surgeons must pas* all training courses. It must have the clinical experience of more than the standard required by the original factory. After the above conditions are met, the foreign original factory will confirm and issue the certificate again, and the certification conditions are strict. 15. In the past year, if the degree of myopia is unstable, it is recommended to consider the stability after the degree is stabilized. The effect of age on laser myopia surgery For the myopia patients who want to undergo laser myopia surgery, the age is a factor to consider. From the perspective of an ophthalmologist, the best age for surgery is between 18 and 40. The reason for setting the minimum age of 18 is mainly due to the fact that before the age of 18, the increase in myopia is likely to be large. Those who undergo myopia laser surgery must be stable within a year.