The number of people with myopia in China is very high and still increasing, and people wearing frames can be found everywhere on the streets. Frame glasses are the easiest way to solve myopia, but they also add a little inconvenience to some people’s life and work. How can we get rid of this trouble? There are three ways: first, wearing contact lenses; second, excimer laser keratomileusis surgery; and third, IOL implantation (artificial lens implantation based on preserving your own lens), most commonly ICL implantation. Faced with these three ways, how are you going to choose? Contact lenses should not be worn for a long time Among the above three modalities, contact lenses are the widely popular one. It directly contacts the cornea and is closer to the nodes of imaging, making it more effective in correcting myopia compared to frame glasses. There are currently soft and hard contact lenses. Adults generally wear soft contact lenses, which are worn during the day and removed at night; children generally wear rigid ones, called keratoplasty lenses, which are worn at night and removed during the day. However, these contact lenses have to be worn on the surface of the eye, which means they have to be worn on the cornea, which can cause dry eye symptoms; if worn for a long time, they can also cause eye surface abnormalities such as macropapillary conjunctivitis due to friction. Especially for people who often wear makeup and eyeliner, wearing them for a long time can easily lead to red, itchy eyes and even corneal staining, which is actually the occurrence of allergic conjunctivitis. Therefore, contact lenses are not suitable for long-term wear. The excimer laser can permanently remove glasses, but only for mild to moderate myopia Another way to get rid of glasses is excimer laser corneal cutting surgery, which corrects myopia by cutting thin corneal tissue, the higher the myopia, the more corneal tissue is cut off. Therefore, the surgery requires a certain thickness of the cornea. If the remaining cornea is too thin after surgery, the central cornea will easily protrude forward and form a cone cornea, resulting in severe irregular astigmatism and high myopia with significant vision loss, and even corneal transplantation in severe cases. For high myopia, it is not suitable for excimer laser corneal cutting surgery because a lot of cornea has to be cut off and the remaining thickness is not enough to maintain the normal function of the cornea. ICL implantation surgery allows high myopia patients to remove their glasses. For high myopia patients with more than 600 degrees of myopia, especially those with more than 1000 degrees of myopia, because of the limitation of corneal thickness, corneal cutting surgery cannot correct all the degrees of myopia, but can only make the degrees smaller. In recent years, ICL implantation surgery has been developed to give patients with high myopia the opportunity to remove their glasses, by placing an IOL in the eye, like a small contact lens. Instead of removing or damaging the original lens or cutting the cornea, the ICL is placed in front of the original lens, allowing the two to work together as a refractive lens. Because the ICL is placed inside the eye for imaging, it is closer to the retina than frame glasses, so the quality of vision can be improved; at the same time, the surgical wound is small and does not require sutures, so the curvature of the cornea is not changed and the surgery does not cause astigmatism. Of course, not all patients with myopia or high myopia are suitable for ICL implantation surgery. If the patient is too old and his own crystal has become cloudy, ICL implantation is not recommended, because the surgery preserves his own crystal, even if ICL is implanted, the post-operative visual effect will not be very good. The post-operative visual effect will not be very good.