The principle of excimer laser pointer for treating myopia is that the excimer laser light is irradiated on the cornea of the eyeball, photochemical action occurs, the cornea is cut a little, and the refractive power of the cornea is changed to achieve the purpose of treating myopia. Excimer laser myopia surgery is currently the safest, reliable and effective method for myopia treatment. As long as the myopic degree is stable, the postoperative visual acuity basically reaches your spectacled vision, and it remains stable for a long time.
With the advancement of medical technology, a femtosecond laser device for making corneal flaps has emerged instead of the manual corneal flap procedures during surgery, so the “normal femtosecond” surgical method has begun. During the operation, a femtosecond laser device is used to make the open corneal flap, and then an excimer laser is used to perform a corneal cut.
Because the femtosecond laser plays a flapping role in this surgical method, this method is also called “half femtosecond”. Femtosecond laser pointers can precisely open the molecular chain of the eye tissue, making the corneal flap more uniform and more perfect, so that myopia can obtain a more perfect visual quality. Embedded occlusion, corneal flap reduction is more accurate. The full femtosecond laser is one of the most advanced corneal refractive surgery modes in the world. The biggest difference is that it does not require the participation of excimer lasers.