Nowadays, many electronic products are used in
. Take online classes, watch videos, and play games
(a sheep sheep)
…
unknowingly, time passed,
eyes inevitably felt uncomfortable,
At this time, the words always come to my ears:
If your eyes are tired,
, just look at the green things and relax.
"Looking at green can protect your vision" is really popular. Many friends will set the screensaver of your phone and computer to green. Some parents even place a small pot of green plants on their children's desks...
But is this really effective?
Can green view protect your vision?
doesn't work!
In fact, green has nothing to do with protecting eyesight.
people's vision is related to the state of maintaining the ciliary muscles of the eye. The reason why we feel eye fatigue is that is because of long-term use of the eyes, which causes the ciliary muscles of the eyeball to be in a highly contracted state and cannot get relaxed . Over time, myopia will also develop.
In other words, as long as the ciliary muscles of the eyeball cannot be relaxed, no matter how much green it looks, it will be useless. The eyes will still feel tired .
Some people may ask about this, how did the green statement that protects eyesight from come from?
This is because green is not as dazzling as other colors and will give people a comfortable feeling. As one of the three primary colors, the wavelength of green light is between 500-570nm and is located in the center of the visible spectrum, making it easier for people to see green.
So, seeing green feels comfortable is a psychological factor, not really protecting your eyes. Let children develop good eye-using habits and strictly control the time and distance of eye use, which is the best way to protect their eyesight!
How to do correct eye protection?
1. It is recommended to exercise at least 2 hours outdoors in the sun every day, and it is recommended to have longer children and adolescents in myopia.
From the perspective of preventing myopia, the key to day outdoor activities is outdoor, not activity content, method and intensity. At the same time, outdoor activities should be arranged according to the location and time, and pay attention to safety, replenish moisture and avoid direct light.
2. For children and adolescents, it is also important to correct their reading and writing postures. achieves "three ones, no tilts".
The so-called "three ones" are "one punch, one foot, one inch": one punch, one punch, one punch, one fist, one foot, one foot, one foot, one foot, one inch, one inch, one finger, one inch, one inch, one finger, and the tip of the pen, are one inch away.
also emphasizes "not tilting your head". Long-term tilting your head to read books and do homework can easily cause myopia in one eye. Parents and children should pay special attention.
3. Control the video time and select larger screen electronic products.
The cumulative entertainment video time of school-age children and adolescents should not exceed 2 hours per day. To prevent myopia, it is advisable to control it within 1 hour, and rest for 3 to 5 minutes in half an hour.
online learning time, primary school students should not exceed 2.5 hours per day, no more than 20 minutes per time; middle school students should not exceed 4 hours per day, no more than 30 minutes per time.
In addition, the size of the screen is very important when choosing electronic products. should be selected as much as possible for electronic products with larger screens and watch them as far as possible. The recommended priority order of
is projector, TV, computer, tablet, and finally mobile phone. It is best to project video onto a large screen or a TV with a larger screen to increase the viewing distance, and try to choose electronic products with higher screen resolution to reduce eye discomfort and fatigue.
4. Have adequate sleep, regular work and rest, balanced nutrition, and do not eat partially. The growth and development of eyes requires abundant nutrition. Eat a balanced diet, not picky or partial to eating. Eat more fruits and vegetables, and consume high-quality protein such as fish, soy products and eggs. You can also pay attention to eating carrots , blueberries and other foods rich in vitamins that are beneficial to the eyes, which have a positive effect on maintaining normal growth and visual function of the eyes. recommends eating less sweets and sugary drinks.
5. The most important thing in protecting eyes is to to let your eyes rest well and don’t be too tired.
Remember 20 - 20 - 20 Principle:
means looking at 20 feet (about 6 meters) away for at least 20 seconds every 20 minutes using the computer. If you are too busy with work and cannot rest frequently, it is recommended to use your eyes continuously for 5 minutes before resting for 45 minutes.
So, if you want to protect your eyes, might as well put down your phone and let your eyes rest! If you really want to see the green, then blink and look at the trees outside the window.
Source: Jiangsu Disease Control
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Editor: Li Jing Reviewer: Liu Zhiguo Yang Huihui Wang Qiao
Editor: Zheng Lei
