The visual acuity of 5.0 in one eye and 4.9 in the other is normal, but whether myopia occurs is related to the patient’s eye habits. If you sit properly, avoid reading and writing in dimly lit environments, look away, do more eye exercises, look at more green plants, etc., to avoid eye fatigue, and have your eyesight checked regularly, you can reduce the possibility of myopia. However, if people do not sit properly, often read and write in a dim environment, do not pay attention to eye exercises, often look at electronic products, such as computer screens, cell phones, etc., it is easy to induce myopia. It is recommended that patients with significant vision loss should seek prompt medical attention to assess their condition and follow the doctor’s instructions for treatment.