Ms. Wang: I work 3-5 hours a day in front of a computer and have been wearing contact lenses since college. Recently, my eyes often feel hot, dry, congested, and in severe cases, photophobia, difficulty opening my eyes, eye pain, and other conditions, and my work efficiency is not as good as before. I went to the pharmacy and bought eye drops, but the more I ordered, the more uncomfortable I felt. I was diagnosed as having dry eyes at the hospital. How can I treat it and how can I prevent it in the future? Dry eye is a condition in which the quality or dynamics of tears are abnormal, leading to a decrease in the stability of the tear film, and is accompanied by ocular discomfort causing ocular surface lesions. Contact lenses and computer life are important causes of dry eye in young people today. Contact lenses, also known as corneal contact lenses, are small, thin artificial lenses that are placed on the cornea. Preliminary statistics show that about 40% of people who wear corneal contact lenses suffer from dry eye. The reason for this is that the lenses are in direct contact with the cornea and conjunctiva, which can cause damage to the cells of both tissues, as well as chemical toxicity and allergic reactions to contact lens cleaning drops. If you look at the computer screen for a long time, the number of blinks decreases, the corneal surface and conjunctival surface do not get enough moisturization, the eye surface and tear function defects intensify, and when you look at something, you will have unclear vision, sore and dry eyes, etc. At this time, patients who use antibiotics and antiviral eye drops containing preservatives will further damage the integrity of the cornea and conjunctival epithelium, aggravating dry eye symptoms. It is recommended that contact lenses and frame glasses be used together, and that contact lenses should not be worn more than 8 hours a day for more than 10 years, and that contact lenses should not be worn by people older than 40 years. The brightness of the computer screen should be moderate, usually about 3 times the surrounding light; for every hour of work in front of the computer, you should take a 10-minute break. You can also use some artificial tears that do not contain preservatives to moisturize your eyes, or deliberately increase the number of blinks.