Excessive eyestrain may lead to eye discomfort, blurred vision, and even cause myopia progression, resulting in vision loss. Excessive eye use is the main cause of eyestrain. When the human body uses the eyes excessively resulting in eyestrain, the most important consequence is to cause the body’s eye discomfort, such as eye distension, photophobia, tearing, dry eyes, eye pain and other eye discomfort symptoms. The more severe cases of eyestrain may have blurred vision, but this can usually be relieved after rest. For those who use their eyes excessively for a long period of time as well as those who suffer from eyestrain, it may lead to irreversible consequences of damage to the eyes, such as causing progression of myopia, which can lead to the patient’s vision loss. When you use your eyes, you should pay attention to proper relaxation and rest, and adjust your eyes after a period of time to avoid eye fatigue and overuse of the eyes by looking at distant objects. Patients with obvious symptoms of visual fatigue are advised to consult a doctor to assess their condition and follow the doctor’s instructions for treatment.