With the onset of autumn and dry weather, itchy eyes, dry eyes, foreign body sensation, red eyes and eye fatigue …… are symptoms that are not new to us now, but in fact they are all manifestations of dry eye syndrome. Due to the rapid development of today’s society, computers, air conditioners and contact lenses are used a lot by us, which makes the incidence of dry eyes rise dramatically, especially among young people and students. Dry eye, also known as corneoconjunctival dryness, is a general term for a variety of conditions characterized by abnormal tear quality and quantity or kinetics from any cause, resulting in decreased tear film stability, accompanied by ocular discomfort and causing ocular surface lesions. Dry eye is divided into two types according to the cause: insufficient tear production and excessive evaporation. The former is due to lacrimal gland disease or malfunction, while the latter is mainly due to lid dysfunction and is commonly seen in the elderly and in people with oily skin. The causes of this condition are multiple: prolonged computer use, prolonged driving, prolonged fine work, smoking, air pollution, prolonged exposure to air conditioning or heating, prolonged contact lens wear (contacts), prolonged use of antibiotic eye drops, etc. Since the symptoms of this disease are usually not serious, people often do not care. However, studies have shown that long-term dry eyes can cause irreversible damage, and in extreme cases may even cause blindness, so this disease should be taken seriously. If you have symptoms of itchy eyes, dry eyes, foreign body sensation, red eyes, eye fatigue, do not ignore, go to the hospital as soon as possible, not just use eye drops, eye drops improperly used not only can not cure the disease, but will aggravate the symptoms. Against dry eye prevention is the key, the following are a few suggestions: ordinary people in the long time use of computer office workers should pay attention to: more blinking, because blinking is a protective neurological reflex action, tear layer can make tears evenly coated in the cornea and conjunctiva surface to keep moist and not dry. Most people generally blink once every five seconds, about 20 times per minute. Take plenty of breaks, 10-15 minutes every hour or so. Working posture and distance is also important, try to keep on 60 cm to distance, adjust a most appropriate posture, so that the line of sight can be kept down about 30 degrees. Do not look at the computer in the dark because the contrast between black and white is damaging to the eyes. For those who use contact lenses, it should be noted that wearing contact lenses for a long time can lead to insufficient tear secretion, unstable tear film formation, corneal hypoxia and repeated erosion of the corneal epithelium, which can lead to vision loss or even blindness in serious cases. Pay attention to eye hygiene when using contact lenses, contact lenses should be removed and cleaned every night, and contact lenses should be replaced regularly. Try to wear contact lenses for a short time or not at all. In addition hot towels on the eyes for 10 minutes can improve the symptoms, as hot compresses can promote blood circulation in the eyes and help to restore the function of the lid gland, preventing dry eyes due to lid gland dysfunction; consume more vitamin A foods such as chrysanthemum and green tea, which are rich in vitamin A and are important for maintaining eye health; yawn can effectively moisten and wet the eyeballs. For treatment, moistening eye drops such as sodium glassate and recombinant human epidermal protein extract drops can be given. Oral Chinese medicines to clear the fire such as Angelica Long Aloe Tablets and Safflower Liver Clearing Thirteen Flavor Pills can be taken, and acupuncture herbal ultrasound nebulization and lid gland massage can be effective.