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How to protect eyesight 1 and improve lighting in study and life?
When it comes to eyes, it is inseparable from light, and the first factor that affects vision is light. In most cases, poor eyesight is related to poor light. For this reason, international and China have formulated strict standards for indoor illumination in different occasions, such as the illumination in reading/writing in the study >: 300Lux, but this is not very direct for protecting eyesight, because most people don't know much about the illumination (brightness) of ambient light and the visual characteristics of eyes.
Generally speaking, there are three main reasons for poor light: first, the environment itself is not suitable for light (too bright or too dark); Second, due to the incorrect body posture, the light is blocked, which makes the originally suitable light dim when it hits the target area; Third, the light is changing (such as morning and evening sunshine, cloudy days, or natural light on cloudy/rainy days). These situations must be avoided at ordinary times.
According to national standards, the brightness of light suitable for reading/writing is about 300-500 lux；; In addition, when watching TV/using a computer, there should also be a background light with appropriate brightness indoors. If you can't judge whether the light in the study/living place is suitable, you can do some tests with eye protection photometric pen. Eye protection light measuring pen is an electronic stationery for monitoring the brightness of light. According to national standards, it synthesizes and converts the measured light data into instructions and alarm information (such as too dark, too dark, suitable, too bright, too bright, etc.). ), so that students can easily improve the lighting situation or adjust their body posture in their study and life, thus protecting their eyesight.
Step 2 correct your posture with your eyes
Students usually have heavy study tasks, like playing computer/watching TV, and spend a long time using their eyes at close range, so they should pay special attention to their posture.
When reading a book/computer/TV, keep still and sit up straight; When reading a book, the book is more than 30 cm away from the eyes; It is best to shine the light on the book from the left front to avoid being blocked by the right hand when writing.
When watching computer/TV, the line of sight should be at the same height as the screen (that is, head-up); Keep the distance between eyes and computer screen above 50 cm, and the distance between eyes and TV is more than 5 times the diagonal length of the screen.
3. Control the duration of close eye use.
Although the characteristics of students determine that they will spend a long time using their eyes as a whole, they can keep a certain interval when studying or watching TV/computer. Because the eyes are in a state of accommodation when they are used at close range, long-term close range use of eyes can easily lead to excessive eye accommodation and induce myopia. Therefore, when using eyes at close range, rest every 45 ~ 50 minutes 10 ~ 15 minutes. Look down or move when resting. This is actually not difficult to do. You might as well set an alarm clock every time you use your eyes.
4. Keep enough sleep and exercise.
Students are in the growth stage. Proper exercise can not only promote the blood circulation of the eyes, but also relax the muscles/nerves of the eyes, which has obvious protective effect on vision. In addition, the eyes also need deep rest, that is sleep.
A collection of propaganda slogans for protecting eyesight 1, let the sun light up the window of the soul.
2. A truly beautiful and clear world.
3, vision care, care for innocence.
The beauty of the horizon is the charm of you and me.
5, care for the eyes, bright and comfortable.
6, bright eyes, bright world.
7. Protect your eyesight, starting with children.
8. Care for eyesight and health.
9. Find a bodyguard for your child's eyes.
10, sincere care, eyes on six ways.
1 1, protect your eyes, tomorrow will be better.
12, the best way to get healthy vision.
13, blink your eyes, life is happier.
14, protect eyesight and ensure health.
15, show good eyesight, the pupil is the window to the soul.
16, innocent childhood, bright eyes.
17, one world, different horizons.
18, children have good eyesight and the whole family is happy.
19, a bright future and a brand-new vision will accompany you to sail and sail.
20, clear vision, pure performance.
2 1. What a wonderful world with good eyesight.
22. Cultivating children's good eyesight is also their good eyesight.
23. The bright future lies in the infinite new generation.
24. Open the window of the soul and the world is in front of you.
25. Smile eyes lock your heart.
26. Protect your eyesight and give your child a bright future.
27. Escort children's bright future.
28. A bright future for children begins with healthy eyesight.
29. Step into new horizons and make your eyes clearer and brighter.
30. Open the window of the soul and create a beautiful vision.
3 1, eliminate children's eye diseases and care for the window of the soul.