There are two types of myopia, the first is physiological myopia, which is mainly caused by unreasonable eye habits, so it is usually seen in children and adolescents, and this myopia will stabilize after the age of 18, and the myopia will not continue to develop. The second type, pathological myopia, is mainly due to congenital genetic factors, so the development is very fast, and even after the age of 18, the degree of myopia may continue to develop until the eyes enter the ranks of high myopia, some people will exceed 1000 degrees, or even 2000 degrees, this situation is more common in the clinic. So if your eyes are nearsighted, you need to go to the hospital regularly for vision and optometry examinations to clarify the rate of myopia development, and if it is developing too fast, it must be controlled early.