How to Protect Children's Eyes during Online Class?

During the novel coronavirus pneumonia, children can no longer go to school as usual. In the time of national isolation, the teachers began online teaching activities and children began to study at home through online classes. The essential tool of online learning is electronic equipment, but it is recognized that it is harmful to children's eyesight. So what kind of equipment is good for children's eyes? How to protect children's eyes?

So what kind of equipment is good?

1. Mobile phone. The phone has a small screen and it can be moved freely. If the teacher transmits the document or sends exercises, the words on the mobile phone will be very small, and the child has to get close to it to see clearly. This behavior will damage their eyes.

2. IPad and laptops. A tablet computer is a little bigger than a mobile phone, thus the characters will be larger. However, the memory of tablet computers is generally larger than that of mobile phones and it can be moved freely, so that some students will play games in online classes.

3. TV projection. The screen of TV is bigger than that of mobile phone and computer. The characters are bigger and the picture is clearer. At the same time, under normal circumstances, the TV is fixed and far away from children. And from the point of vision protection, TV projection is better than the first two.

4. Projector. The function of projector is similar to that of TV, and the characters are more obvious. But in terms of diopter, the mobile phone is -0.438d, the computer is -0.418d, the TV is -0.188d, and the projector is -0.104d. From this data point of view, the projector should be the device which has minimal eye damage.

How to protect children's eyes?

Eyes protection cannot just depend on what kind of electronic equipment they choose; it's just a small factor. There are many other factors that affect a child's vision.

1. Light. The eye protection lamp’s effect is not as good as natural light. The least harmful light is natural light. Therefore, parents should let the child's desk near the windowsill or balcony. If the lighting is needed, try to choose a table lamp between 13 and 18 watts, and the light should be warm and not dazzling.

2. Distance. The mobile phone or tablet should be placed in a suitable position and cannot be moved at will. The best distance between the eyes and the equipment is more than 40 cm. If the distance is below 40, it will cause damage to the eyes.

3. Blue light glasses kids. Actually, a pair of blue light blocking glasses for kids is quite necessary. The kids blue glasses can protect kids from blue light of electronic products to some extent. Kids‘eyes are weak which are easily damaged, therefore kids screen glasses are useful.

4. Sitting position. Except for blue blocker glasses for kids, children's sitting posture is also very important. Parents should tell children not to bow down to do homework

Though the above methods, parents should know how to protect kids ’eyes. From my point, I recommend the anti-light glasses especially especially anti-radiation glasses for kids, because it is useful and easy to use. On the other hand, the price is relatively cheap compared with other things.

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