Compared to frames, contact lenses are more troublesome to wear, but they are significantly better than frames in terms of visual effects, ease of sports and cosmetic effects, and they are more realistic to see. Are all people with myopia suitable for contact lenses? We say that the vast majority of people can wear them, and that there are some situations in which patients should choose to wear contact lenses first. For example, patients with refractive error, due to the magnifying and reducing effect of frame glasses on the image, so that both eyes on the retina imaging unequal, such patients, reluctant to wear frame glasses, will inevitably cause visual fatigue, over time, resulting in vision loss, and even the loss of binocular vision function. For example, in patients with high myopia, the narrowing effect of frame glasses on the image is obviously enhanced, so that the scope of the patient’s vision is obviously reduced, and the peripheral objects are obviously distorted, thus easily causing visual fatigue, which in turn brings great inconvenience to work and life. All these problems can be solved by wearing contact lenses. Medically speaking, the biggest impact of contact lenses on the eye is that they block the uptake of oxygen by the cornea. On the other hand, they cause allergy to the conjunctiva due to their role as a foreign body and the proteins adsorbed on their surface, resulting in symptoms such as eye redness and foreign body sensation, while the evaporation of water from the soft lenses themselves can cause patients to feel dry eyes on a regular basis. Therefore, wearing traditional soft contact lenses does pose a potential threat to eye safety. RGP is known as the “breathing contact lens” and its most prominent advantage is that it has a highly oxygen permeable structure, and because of its small diameter, it does not pose a series of problems caused by corneal hypoxia and poses no threat to eye safety. Safety is basically not a threat. The unique advantages of RGP: 1. Good molding, not easily deformed, high quality of optical correction. Especially for some patients with high myopia and astigmatism, the correction effect is better. For irregular astigmatism of the cornea caused by various reasons, such as: cone cornea, after keratoconus surgery, after trauma, etc., it is the only correction method that can effectively improve visual acuity. 2. It has good biocompatibility. Even long-term wearing will not cause corneal hypertrophy and edema. It also has a certain maintenance effect on the health of the cornea. 3. Anti-precipitation. Since RGP lenses are less likely to deposit proteins, they rarely cause allergic reactions in the conjunctiva. 4. Its non-aqueous property is less likely to make patients feel dry eyes. 5. It is easy to care for and the lenses have a long life span, usually 2-3 years, as long as care is taken to use them properly, and from this point of view, it is also very economical. RGP can control the development of myopia myopia has a certain genetic factor, especially some highly myopic people, the possibility of heredity is very high. Some children need to wear myopia glasses when they first start elementary school. This kind of myopia is generally difficult to control, and it grows at a rate of 50 or 100 degrees every year, and the younger they are, the less easy it is to control it, so for them, they can try contact lenses to control the development of myopia, because foreign statistics show that wearing contact lenses has better control over myopia, and the control effect of hard lenses is optimal. Why can RGP control the development of myopia? In summary, there are several reasons: 1. Compared with refractive surgery, frame glasses, or soft lenses, RGP has the best vision correction effect, which can make the corrected person have the clearest vision, thus making the patient have the closest vision effect to the orthoptic eye. 2, due to the hardness of the lens, it can produce a certain pressure on the cornea during transient vision, this pressure can flatten the cornea, thus reducing the refractive power of the cornea and the astigmatism of the cornea, and then control the progress of the total refractive power of the eye. 3. This transient effect can compress the eye, thus controlling the growth of the eye axis, and thus controlling the progression of myopia. Therefore, for some children who develop myopia at a very young age, as well as children with one or both parents suffering from high myopia, RGP correction can be tried when myopia development cannot be controlled. Therefore, RGP contact lenses can be considered an ideal choice for contact lens preferences.