Protecting eye sight and relieving eye fatigue generally requires regular eye use, balanced nutrition, and prevention of cardiovascular and cerebrovascular diseases. 1. Regular eye use: reading books or watching screens for a long time will cause eye fatigue, congestion, vision loss and other symptoms of discomfort. It is recommended to take a 10-minute break for every hour of eye use, reduce the time of looking at cell phones, and do eye exercises to relieve eye fatigue with eyes closed. 2. Balanced nutrition: balanced nutrition is a better way to protect eye vision, should pay attention to supplement the right amount of vitamins, such as lutein can fight against blue light damage, help the retina of the eye against ultraviolet rays, reduce eye fatigue. 3. Prevention of cardiovascular diseases: the blood vessels under the eyes are very fine blood vessels in the body, high blood pressure and diabetes can easily hurt them, which can lead to blindness in serious cases. Preventing these cardiovascular and cerebrovascular diseases is also an important protection for the eyes. It is recommended to go to the ophthalmology department of regular hospitals for consultation and under the guidance of doctors for vision protection and fatigue relief.