After the age of 18, myopia will be stabilized, but due to pathological growth of the eye axis and long-term bad eye habits, myopia will still deepen in a few patients. After the age of eighteen, the development of eyeball and vision basically stops, and myopia will be stabilized, and generally will not deepen. In a few patients, even after the age of 18, the axes of the eyes will continue to grow and myopia will continue to deepen, and may even develop into ultra-high myopia, resulting in various complications, such as retinal lentigines, peripheral retinal lattice-like degeneration, or even retinal detachment and other serious complications. A small number of patients continue to have bad eye habits, such as reading close to the eye for a long time and applying electronic products, which cause the ciliary muscle of the eye to be in spasm for a long period of time, and also lead to continuous growth of the eye axis and deepening of myopia. It is recommended that myopia patients develop good eye habits, consult a doctor when there is significant vision loss, assess their condition and follow the doctor’s instructions for treatment.