During the epidemic prevention and control period, students "stopped classes and did not stop learning" at home, and the time spent on electronic products also increased, so it is necessary to pay attention to the combination of work and leisure, and not to overdraft their eyes. Today, I would like to remind everyone that we must use our eyes scientifically to prevent myopia during the stay at home.
What is myopia?
Myopia is a phenomenon of poor vision due to excessive length of the eye axis or corneal curvature and excessive curvature of the lens, causing the focus of the vision to fall in front of the retina and produce a clear view of the nearby things and blurry viewing of distant scenes. Myopia is irreversible, and the degree will increase year by year, if the formation of high myopia, easy to cause glaucoma, cataracts and other complications, severe cases will even cause blindness.
If you usually need to squint your eyes, tilt your head, tilt your neck, or walk in to see clearly, then pay attention to it, and hurry up and carry out scientific and standardized examinations in regular medical institutions.
What are the causes of myopia?
Causes of myopia include genetic factors, environmental factors, nutritional factors, and poor eye habits. Among them, poor eye habits are the main reasons for myopia in adolescents and children, such as reading and writing under too strong or too weak light, reading books in a mobile environment, incorrect reading and writing posture, excessive use of electronic products, eating too many snacks and sweets, not paying attention to eye hygiene, staying up late and so on.
How can online learning prevent myopia?
1, reading and writing posture should be correct, so that the eyes are a foot away from the book, the chest is far away from the desk, and the book is one inch away from the tip of the pen; do not lie on the bed or on the sofa to study on the screen.
2, read and write continuously for about 40 minutes to rest and overlook for 10 minutes; insist on doing eye exercises every day to relax the eyes.
3. Choose large-screen electronic products as much as possible, adjust the brightness to the eye to feel comfortable, and ensure that the upper end of the screen is at the same level as the eye level.
4, during the day to see the writing light should be sufficient, at night to use the desk lamp and room ceiling lamp at the same time. Home lighting light source should use three primary color light source lighting equipment, table lamp color temperature should not exceed 4000K.
5, to ensure adequate sleep, in general, primary school students should sleep 10 hours a day, junior high school students should reach 9 hours, high school students should reach 8 hours.
6, pay attention to diet and exercise, eat more vegetables, fruits, eat less sweets, drink less drinks; when it is not convenient for outdoor activities, you can walk indoors, do gymnastics, squat exercises, sit-ups, etc.
7. Pay attention to eye hygiene, do not rub your eyes with your hands, use the "7-step handwashing method" when washing your hands and ensure more than 20 seconds of time; if you feel that your eyes are not adapted to stop the screen behavior, if necessary, go to the hospital for treatment.
What are the precautions for using electronic devices?
For primary and secondary school students, the use of electronic products should strictly follow the "20-20-20" principle, that is, after looking at the screen for 20 minutes, look up at the distance of 20 feet, that is, 6 meters away, and last for more than 20 seconds. Children aged 0-3 should be prohibited from using electronic products.
【Finishing】Lin Qunxian
Some of the content is integrated from the network
【Author】 Lin Qunxian
Educate the Wanjia