In your daily life, your eyes may experience discomfort of one kind or another. Many people don’t take it seriously because it doesn’t affect their work or life yet, and those who are a little worse off buy themselves some anti-inflammatory eye drops and apply them to temporarily relieve their symptoms. The serious patients who are troubled by this may just hear such a new term “dry eye” from the doctors they see, and “dry eye” also quietly approaches you as a worrying fashionable disease. “Dry eye”, also known as keratoconjunctival dryness, is a general term for a variety of conditions characterized by various causes of tear film instability due to abnormal tear quality and quantity or kinetics, resulting in dryness and other uncomfortable symptoms in the eye and causing ocular surface lesions. A pair of lacrimal and paracrine glands grows above the human orbit and secretes tears continuously. The tears spread to the entire surface of the eye through transient action, forming a tear film. The tear film has an important protective and nutritional role for the eye, and a stable tear film is the basis for maintaining a healthy ocular surface. The stability of the tear film depends on the normal quantity and quality of the layers that make up the tear film (from the outside inward, the lipid layer, the aqueous layer, and the mucin layer) and on the normal tear dynamics. When the quantity or quality of tears is abnormal, resulting in reduced tear film stability, it can cause a series of ocular discomfort symptoms and ocular surface damage, which is called dry eye. The symptoms of dry eye vary greatly among individuals. Common symptoms include dry eyes, itching, foreign body sensation, painful burning sensation, easy fatigue, desire to sleep, tight and heavy eyelids, sticky secretions, fear of wind, photophobia, sensitivity to external stimuli, and temporary blurred vision. Sometimes the eyes are too dry and the lack of basic tears stimulates reflex tear secretion and causes frequent tearing. In more severe cases, the eyes will be red, swollen, congested, keratinized, and the corneal epithelium will break down and have filamentous adhesions, which will cause keratoconjunctival lesions over time and will affect vision. Dry eye is a chronic disease that often afflicts those who suffer from it, and its causes are not as noteworthy as trauma and internal diseases. The causes of dry eye are as follows: 1. Tear quality decreases due to physiological reasons such as advanced age, lack of sleep, and mental tension. 2, taking some of the antihypertensive drugs and some psychostimulants have an impact on tear production, such as taking paracetamol to produce harmful effects on tears, taking insulin and certain current birth control pills can reduce tear production. 3, due to the environment, such as the room where the application of heating, air conditioning and other dry, caused by the evaporation of tears. 4, long time engaged in computer operation, car driving, reading and other fine work, the number of transient eyes reduced. 5, women in particular should beware of makeup eye disease, false eyelash glue, poor quality mascara, eye cream, eye shadow, etc. can cause chemical eye damage, damage the tear film. 6, due to wearing contact lenses, watching TV for a long time, suffering from allergic conjunctivitis, atmospheric pollution, ultraviolet light, and other reasons, and caused by the reduction of tear secretion, tear quality decline. Patients can self-test whether they are suffering from dry eye. If three or more of the following symptoms are present, it should be noticed. If five or more of these symptoms occur, and if you do not blink for less than ten seconds, you need to go to the hospital for treatment. (1) eye fatigue; (2) easy redness of the eyes; (3) dry eyes; (4) frequent sunken eyelids; (5) inexplicable discomfort; (6) cloudy vision; (7) itchy eyes; (8) glare to light; (9) unexplained tearing; (10) eye pain. In order to prevent dry eye disease, we must first of all do in daily life to strengthen the prevention and raise awareness of self-care of the eyes: 1, daily life attention to eye care, can reduce the symptoms of dry eye disease, such as the usual attention to mental relaxation, feel eye fatigue when taking appropriate rest; maintain good habits, sleep enough, do not stay up late. Try not to look upward, place the TV or computer in a position below the eye level, and watch TV or use the computer should not be too long, desk, computer monitor placed in a place not subject to direct sunlight, because the picture of the reflection of lighting light will cause eye fatigue, while maintaining a certain amount of humidity in the room. Usually eat more vegetables, fruits. 2, do not prescribe their own “prescription”, anti-inflammatory, anti-fatigue eye drops contain preservatives, easy to destroy the balance of the tear film of the eye, more likely to get dry eye disease. 3, found eye discomfort, to promptly go to the ophthalmology consultation. If you find that the symptoms are serious or persistent and cannot be slowed down, you should receive timely diagnosis and treatment from an ophthalmologist. If the diagnosis is dry eye, you should strictly follow the medical advice to receive drugs and other treatment; if the glasses or contact lens discomfort caused by visual fatigue, according to the eye doctor prescribed glasses to reconfigure the appropriate glasses, and pay attention to the eye care in daily life. The health of the eyes is directly related to whether a person can work, study, live and engage in fine trades and many other aspects. Therefore, we should always care for the health of our eyes and keep “dry eye” away from our lives.