44 years old eyesight may be a normal physiological phenomenon, that is, presbyopia, mainly with the age of the patient’s eye adjustment decreased caused by the appearance of presbyopia may be related to the method of eye use, refractive error, physical fitness and so on. 1. Eye use: at work, people who are always engaged in fine near-distance work will have presbyopia earlier than others, and may have presbyopia at the age of 44 years. 2. Refractive error: if the patient is farsighted, it is easier for him/her to develop presbyopia too early; if he/she is nearsighted, the presbyopia will appear later. 3. Physical quality: In addition, long arms and tall people may be engaged in the work of the farther work, than the short people with short arms of the crowd appeared in the blurred vision of the time earlier. It is recommended that patients with presbyopia consult a doctor in a timely manner to assess their condition and follow the doctor’s instructions for treatment.