Half a month ago, Mr. Zhang developed symptoms such as dry eyes and tears when he rubbed his eyes. He thought he was suffering from trachoma or conjunctivitis, and bought antibiotic eye drops from the pharmacy. But half a month later, the symptoms of eye discomfort not only did not ease, but also had a tendency to aggravate. After examination, the eye discomfort symptoms are due to prolonged use of eyes caused by dry eye and visual fatigue. Various electronic products have brought a wealth of advice and convenient communication, but also make the prevalence of visual fatigue, dry eye disease and other diseases continue to rise. In recent years, there are more and more patients with “low head” eye diseases, and most of them are young people, and the number of children with myopia is also increasing year by year, and their age is getting younger and younger. Therefore, it is important to pay attention to it and actively prevent and treat it. Dry eye is a common but often overlooked eye disease, its main symptoms of tiredness, acidity, swelling, blinking, dryness, tearing, blurring, photophobia, etc., the cause of which is overuse of the eyes and lead to, most of the patients manifested in the “computer terminal syndrome”. Under normal circumstances, people blink about 20 times a minute, eyelids like wipers play a role in cleaning tiny 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. Under these circumstances, the water in the eyes tends to evaporate and more tiny particles adhere to the eyeball. This makes the smooth, flat tear film that originally covered the cornea and conjunctiva unstable, causing the cornea, which has the sharpest senses, to lose its first line of defense. The surface of the eyeball is dry, conjunctival congestion, eye discomfort, burning sensation and foreign body sensation, grinding pain and so on, and the infection will also cause keratitis and endocarditis. At the same time, “screen” for a long time will also make the ciliary muscle has been in a state of tension, and again look up to see things in front of the eyes will often be a blur, blurred vision. The resulting long-term, recurring visual fatigue can’t be relieved, leading to vision loss. Especially for children and teenagers, often play cell phones, computers on the vision of the impact is even more. Research results show that children who exercise 2 hours a day, the incidence of myopia is 0.3%, exercise 1 hour myopia incidence is 3% -5%, exercise half an hour is 24%. Therefore, to deal with “dry eye”, the most fundamental prevention method is “less eye use, more blinking, every day to ensure that a certain amount of time of the whole body movement and eye movement. With eyes 40 minutes to 1 hour to the appropriate rest, reading distance should be maintained at about 30 centimeters, and try not to look down, thus bringing the eyes and cervical spine double burden.” Two simple and effective eye exercises. One, keep your head still, look at the corners of the door frame with your eyes, and let your eyeballs turn clockwise and counterclockwise 9 times each. Both allow the six muscles of the eye to fully massage the eyeball and increase blood circulation to the eye. Secondly, hang a ping pong ball on the door with a rope, eyes follow the sphere one after the other swinging movement for 20 minutes, exercise eye regulation. In addition, if you feel dry and uncomfortable eyes, do not use eye drops. Because most of the eye drops in order to prevent contamination after opening the bottle are added preservatives, long-term use will cause superficial keratitis. 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. Health care is recommended to use preservative-free sodium vitrate to relieve eye discomfort.