In recent years, there are more and more patients with “low head” eye disease, and most of them are young people, and the number of children with myopia is also increasing year by year, and the age is getting younger and younger. Therefore, we should pay enough attention to actively prevent and treat. 1, must know: “brush” easily caused by “dry eye syndrome” dry eye syndrome is a common but often neglected eye disease, its main symptoms are tired, sore, bloated, blinking, dryness, tearing, blurred, photophobia, etc., the cause is excessive use of the eyes and caused by Most of the patients show “computer terminal syndrome”. In general, people blink about 20 times a minute, and the eyelids act like wipers to clean microscopic particles, bacteria and viruses and keep the eyes moist. When using a computer or cell phone, the number of blinks per minute decreases to 6 to 10 due to concentration. In this case, the moisture in the eyes tends to evaporate and microscopic particles adhere to the eyeball more often. The smooth, flat tear film that used to cover the cornea and conjunctiva becomes unstable, causing the cornea, which has the sharpest senses, to lose its first line of defense. The surface of the eye appears dry, conjunctival congestion, eye discomfort, burning and foreign body sensation, grinding pain, etc. Infection can also lead to keratitis and endophthalmitis. At the same time, “swiping” for a long time will also keep the ciliary muscle in a state of tension, and when you look up again, your eyes will often be blurred and your vision will be unclear. The resulting long-term, recurring visual fatigue cannot be relieved, leading to vision loss. Especially for children and adolescents, often playing with cell phones and computers has a greater impact on vision. Some research results show that children who exercise 2 hours a day, the incidence of myopia is 0.3%, the incidence of myopia is 3-5% for one hour of exercise, and 24% for half an hour of exercise. 2, must learn: two tricks to deal with “dry eye” against “dry eye”, the most fundamental prevention method is “less eye, more blinking, to ensure that a certain amount of time every day the whole body exercise and eye exercise. Use eyes for 40 minutes to an hour to the appropriate rest, reading distance should be maintained at about 30 cm, and try not to look down, thus bringing the double burden on the eyes and cervical spine. 1, keep your head still, use your eyes to look at the four corners of the door frame, so that the eyeballs clockwise, counterclockwise 9 turns each. Both the six muscles of the eye to fully massage the eye, but also to increase the blood circulation of the eye; 2, hanging a ping-pong ball on the door with a rope, the eyes follow the sphere a front and back swing movement for 20 minutes, exercise eye regulation. 3, must be prevented: do not use eye drops indiscriminately If you feel dry and uncomfortable eyes, do not use eye drops indiscriminately. Because most eye drops in order to prevent pollution after opening the bottle are added preservatives, long-term use will cause superficial keratitis. 1, containing a variety of “pine”, such as prednisone, cortisone and other hormonal eye drops and antibiotic eye drops should be used under the guidance of a doctor; 2, the health class is recommended to use the appropriate preservative-free sodium glass acid to relieve eye discomfort.