Nearsightedness can be prevented through more outdoor activities, good eye habits and regular eye examinations. 1. More outdoor activities: It is recommended to do appropriate outdoor activities every day. Sunlight can promote the release of dopamine from the retina, which can inhibit the growth of the eye axis and effectively prevent and delay myopia. 2. Develop good eye habits: minimize the use of electronic products, avoid reading and studying for a long time, use the correct eye posture, and reading should not be carried out in places where the light is too strong or too weak. Adopting good eye habits can avoid eye fatigue and prevent the occurrence of myopia. 3. Regular eye examination: It is generally recommended to have an eye examination once a year or once every six months, so as to find out whether there are any eye diseases and myopia. It is recommended to go to the ophthalmology department of regular hospitals for detailed consultation. When myopia occurs, you should go to the hospital in time and wear eyeglasses to correct your vision after strict optometry.