Excimer laser surgery is currently the most effective way to treat myopia in adults. After nearly 30 years of clinical application, the technology of excimer laser surgery for myopia is basically mature, and as long as the preoperative examination excludes contraindications to surgery the surgery is safe and the surgical results are stable. Moreover, the surgery has a certain degree of predictability. The preoperative examination will tell you how the postoperative effect will be. What problems will occur after surgery? These experts will tell you in advance before the surgery, so what is the difference between regular LASIK and ultra-thin LASIK surgery? With the development of technology, a safer and more adaptable ultra-thin LASIK based on LASIK has entered the limelight. Ophthalmologists say that compared to LASIK ultra-thin LASIK allows many high number, thin corneas, conventional LASIK inoperable patients can also have the opportunity to achieve the desire for surgical removal, and for patients suitable for LASIK, if you choose ultra-thin LASIK will retain more corneal stroma, the safety of surgery and post-operative stability will be higher. Ultra-thin LASIK saves corneal thickness. Ultra-thin LASIK than conventional LASIK corneal flap to save about 30μm corneal thickness, which is the biggest technical highlight of ultra-thin corneal lamellar technology, so that the thickness of the cornea left after laser cutting is thicker, and the thickness of the cornea left after cutting plays a very important role in the occurrence of postoperative cone corneal and the maintenance of normal anatomy and physiological function of the cornea, which is a great concern to surgeons in the field of refractive surgery today. This is an issue of great concern to surgeons in the field of refractive surgery today. In fact, to make a perfect ultra-thin corneal flap, not only does it require cutting-edge surgical equipment, i.e., an ultra-thin, fully automated corneal microdebrider, but also requires the surgeon to master very skilled and precise clinical techniques in order to ensure that nothing goes wrong and that the surgery is of high safety and quality. Ultra-thin LASIK protects the lifelong safety of myopic patients. Clinical studies at home and abroad have shown that: the safety of the patient’s cornea after excimer laser surgery depends mainly on the thickness of the corneal stroma, which is generally considered to be greater than 250μm that is safe, while the thickness of the flap and the thin impact on corneal safety no significant difference, in other words the stromal bed thickness if they are 300μm, a patient flap thickness 160μm, another patient flap thickness 80μm, the safety of the two is the same, and If the surgeon can make the flap of the former 80μm thick during the surgery, the patient will be able to complete about 800 degrees of myopia treatment with the same safety. LASIK with ultra-thin flaps provides maximum protection for myopic patients for life and offers a safer surgical approach for patients with high counts and thin corneas. The procedure is exactly the same as standard LASIK except for a special disposable tip on the lamellar knife, which costs more because of the special tip used, and therefore the procedure is relatively more expensive compared to standard LASIK.