Many people think that the mobile phone has opened the "eye protection mode", and the damage to the eyes is almost gone, so use electronic products such as mobile phones without restraint. In fact, the "eye protection mode" is to adjust the spectrum of the screen to the yellow warm color system by adjusting the color and brightness of the mobile phone screen. This reduces the damage caused by the blue light to the eyes to a certain extent. The biggest damage to the eyes of electronic products is the visual fatigue caused by the eye for a long time. On the one hand, due to the great concentration of attention when playing with mobile phones, the number of times has been greatly reduced, which has a impact on the formation of tear membranes, and it is easy to cause dry eye. Watch the electronic screen in a timely manner. It is recommended to look at the screen for 20 minutes, and look up for 20 feet (6 meters) for more than 20 seconds to prevent myopia. It is recommended that you have no less than 2 hours under the outdoor sunlight every day. For 14 hours, it can be carried out intermittently and is not restricted to form and content.
很多人认为，手机开启了“护眼模式”，对眼睛的伤害就几乎没有了，于是无节制地使用手机等电子产品。事实上，“护眼模式”是通过调节手机屏幕的色温和亮度等参数，把屏幕的光谱调到偏黄色的暖色系，这在一定程度上减轻蓝光对眼睛造成的伤害，但不能完全消除，电子产品对眼睛最大的伤害是长时间近距离用眼产生的视疲劳。一方面，玩手机时由于注意力集中眨眼次数大大减少，对泪膜的形成造成了影响，容易引起眼部干涩等。观看电子屏幕要适时体息，建议看屏幕20分钟后，抬头远跳20英尺(6米)外20秒以上，预防近视，建议每天户外阳光下活动不少于2小时，每周累计不少于14小时，可间歇进行，不拘泥于形式和内容。
Image by Helmut Strasil from Pixabay