1, monitor position: the upper edge of the monitor should be lower than the eye level. In fact, the operator’s gaze angle is the key factor causing visual fatigue. Angle of gaze in the horizontal line under 14, eye to screen distance of at least 25 inches (equivalent to 62.5cm). The monitor is best to tilt back a certain angle, in order to better meet the requirements of binocular stereo vision. The keyboard should be placed close to the screen position, so that the eye exposure area is relatively reduced to avoid dry eye symptoms caused by this. 2, the application of the visual screen: screen with a visual screen can reduce the screen light reflection, increase the blink rate of the operator, so that the subjective discomfort is reduced. 3, lighting: the lighting of the operating environment is also an important factor, should avoid direct light to the screen caused by reflection, and the use of indirect lighting. The light should not be too strong, so as not to make the screen relatively dark, which is not conducive to reading. Should also use blinds, curtains, etc. to adjust the outdoor light to achieve visual comfort. 4.Rest plan: VDT operators who do short breaks every 15 minutes of work have the least symptoms of eye tension and foggy vision. 5.Medication: Medication is mainly symptomatic, mostly applying artificial tears and drugs that promote corneal epithelial growth and repair to combat dry eye surface symptoms and relieve visual fatigue. Vitamin B12 can dose-dependently relieve ciliary muscle fatigue. 6, treatment of primary disease: For patients with original eye abnormalities, treatment of primary disease is effective and necessary. Refractive error should be corrected in a timely manner, with appropriate glasses, elderly patients with additional glasses for reading, but also can be adjusted and concentration training. The refractive power of the lenses should be adjusted according to the individual’s habits and the distance between the eye and the VDT screen. 7, daily diet: long-term computer operators should eat more fresh vegetables and fruits, while increasing the intake of vitamins A, B1, C, E. To prevent corneal dryness, dry eyes, vision loss, and even night blindness, computer operators should eat more foods rich in vitamin A, such as soy products, fish, milk, walnuts, green vegetables, cabbage, cabbage, tomatoes and fresh fruit. Vitamin C can effectively inhibit cell oxidation. Vitamin E is mainly used to lower cholesterol, remove waste from the body and prevent cataracts. Vitamin B1 can nourish the nerves, and green leafy vegetables contain a lot of vitamin B1. Green tea can be consumed every day, because the lipopolysaccharide in tea can improve the hematopoietic function of the body, and tea also has the function of preventing radiation damage. Breakfast should be eaten well and nutritionally adequate to ensure vigorous energy and have enough calories. Chinese food should eat more food containing high protein, such as lean pork, beef, mutton, chicken and duck, animal offal, all kinds of fish, beans and soy products. Dinner should be light, eat more food with high vitamin content, such as a variety of fresh vegetables, and eat some fresh fruit after the meal. At the same time, use foods high in phospholipids to benefit the brain, such as egg yolk, fish, shrimp, walnuts, peanuts and so on. Also consciously choose more food to protect the eyes, protect eye health, to prevent myopia and other eye diseases, eye health food are a variety of animal liver, milk, goat’s milk, cream, millet, walnuts, carrots, bok choy, spinach, cabbage, tomatoes, cauliflower, cabbage, wolfberries and a variety of fresh fruit. 7, other: look at a kind of three-dimensional visual chart when resting between work as a way to relax the eyes. (1) massage the neck: moderate strength, then use the fingertips to press the muscles of the back of the neck pillow, along the vertebrae have been pushed down. Repeat 5 times. (2) Massage the neck: press the muscles of the back of the neck pillow on the right side with the fingers of the right hand, do circular movements for several times, and then exchange the left hand to do it. (3) Relax the neck muscles: the bones of the neck is almost the most flexible part of the whole body, can be turned up and down, so do stretching exercise is also based on these, just like doing gymnastics in elementary school, up and down, turn around, 5 times per side, repeat several times, remember not to push too hard. (4) shrugging exercise: shoulders left and right, up and down, front and back each shrugging 5, can eliminate the tension in the neck and shoulders. (5) hand stretching exercise: stand or sit straight in a chair, then fold your fingers, hands slowly raise, while maintaining the palms of your hands facing the ceiling for a few seconds, repeat 5-10 times. If you can not completely raise your hands, you can stretch as appropriate. (6) wrist exercise: straighten both hands, palms to the ground, slowly hold the fist, wrist downward bending, moderate strength, maintain 5 seconds. Palms slowly lift upward, palms forward, forearms have a slight feeling of being pulled tight, maintain 5 seconds, repeat 5 times.