If myopia deepens after adulthood, it is usually seen in two cases: the first is pathological myopia, which is mainly due to congenital genetic factors that cause myopia, and this myopia is not limited by age, even after adulthood, the degree of myopia will continue to develop. Therefore, it is important to maintain proper eye habits so that the growth rate of myopia can be controlled as slowly as possible. The second one is seen in middle-aged and elderly people, which means that as cataract occurs and develops, the lens gradually becomes swollen, which may cause myopia to appear or myopia to deepen in the process. In this case, a routine slit lamp examination should be performed at the hospital to clarify the degree of cataract. If the cataract is serious, surgery can be considered and the refractive state of the eye can be restored to normal after surgery.