Liu Na is 26 years old and has been wearing glasses for more than ten years. One day in the fourth grade of elementary school, my mother found her squinting watching TV and asked her if her eyes were uncomfortable. When I went to the hospital, I found out that I was short-sighted. Although the degree of myopia has not increased much in recent years, she has changed a dozen pairs of glasses so far, and the most expensive pair cost more than 3,000 yuan.

Liu Na worked from home during the epidemic this year, staring at the computer every day, lying down and brushing her mobile phone when not working. Although she has resumed work now, she still often plays with her mobile phone until midnight. "The degree of myopia has deepened, so I came here and changed the lenses. ".

In my country, more than 600 million people suffer from myopia. According to the "China Eye Health White Paper" released by the National Health Commission on June 5, the overall myopia rate among children and adolescents in my country is 53.6%, of which 14.5% for 6-year-old children, 36% for primary school students, 71.6% for junior high school students, and 71.6% for high school students. 81%, and 90% for college students.

Expert advice:

Wei Wenbin, vice president of Beijing Tongren Hospital and director of the Department of Ophthalmology:

Myopia is closely related to long-term close eye use. Especially during the epidemic, children and adolescents must not only avoid going out, but also learn through online classes, which will undoubtedly lead to the occurrence of myopia or the deepening of myopia.

How can children and adolescents use their eyes properly? Wei Wenbin suggested avoiding prolonged use of electronic products and watching TV. When choosing electronic products, we must adhere to the principle of "better big than small", and the order of selection is projector, TV, computer, tablet computer, and mobile phone. The use of electronic products for non-learning should not exceed 15 minutes, and the cumulative amount should not exceed 1 hour per day. After 30 to 40 minutes of online study, close your eyes to rest or look away for 10 minutes. Continue to do eye exercises carefully after using your eyes to make your eyes fully rest. When reading and writing, keep the "three ones", the hand is one inch away from the tip of the pen, the eye is one foot away from the book, and the chest is one punch away from the desk.

In addition, to get rid of bad eye habits. Do not read or use electronic products while eating or lying in bed, do not read and write in dim light or direct sunlight, turn on the room headlight and table lamp at the same time during the reading and writing process, the table lamp must have sufficient and uniform brightness and color temperature, books and paper Hardcover coated paper should be avoided to reduce the occurrence of glare. A screen saver wallpaper with a green background can be set to relieve eye strain.

Wei Wenbin suggested that primary school students sleep 10 hours a day, junior high school students 9 hours, and high school students 8 hours. If it is found that the child tilts his head to see things, frequently squints, squints and other abnormal conditions, he should carefully observe it, and go to the hospital if necessary.

In April this year, the National Health and Health Commission issued the "Guidelines for the Prevention of Myopia During the Epidemic of New Coronary Pneumonia in Children and Adolescents", which specifically mentioned that outdoor activities are the easiest and most effective way to prevent myopia, and full exposure to sunlight can effectively prevent the occurrence and development of myopia . Ensure more than two hours of outdoor activities every day; encourage children and adolescents to increase their exposure to outdoor sunlight by walking to and from school, walking out of the classroom between classes, and doing outdoor activities after school in the afternoon before completing homework.

For children and adolescents who are already myopic, Wei Wenbin said that once myopia is diagnosed, intervention should be made, and glasses should be worn if the degree is greater than 100 degrees. "First of all, we should go to the hospital for identification, and distinguish between true myopia or visual fatigue and pseudo-myopia."

Wei Wenbin reminded that adults who watch electronic screens for a long time may also increase the degree of myopia and cause fundus lesions at the same time. This is also the most important cause of blindness. "The deepening of myopia in the middle-aged and elderly may be related to the occurrence and development of cataracts, so office workers should also pay attention to eye care, and conduct eye examinations when necessary to avoid delaying treatment."

Guo Xin, director of the school health center of the Beijing Center for Disease Control and Prevention: