手机看多了眼睛累？七种办法帮你消除眼疲劳_时事

手机看多了眼睛累？七种办法帮你消除眼疲劳

眩目是注视屏幕导致眼疲劳的最大原因之一。只要保证在光线足够充足的屋子里看手机或电脑就能避免这一点。如果设备一直比周围环境亮，会导致眼疲劳。显示屏和手机上安装防眩目屏也会有帮助。如果戴眼镜，专家建议购买有防反射涂层的镜片。

Exercise your eyes

锻炼眼睛

Staring at a screen continuously for hours on end causes focusing fatigue. To avoid this, many eye experts recommend the “20-20-20 rule” – looking away from your phone/computer screen every 20 minutes and focusing on an object at least 20ft away for at least 20 seconds. The science behind this trick is that looking at objects at a distance relaxes the focusing muscle in the eye, helping to reduce fatigue.

连续数小时盯着屏幕会导致聚焦性眼疲劳。为了避免这一点，很多眼科专家推荐“20-20-20规则”，也就是每20分钟让眼睛离开手机或电脑屏幕，盯着20英尺（约合6.1米）外的物体看至少20秒。这种做法的科学道理是看远处的物体能放松眼部的紧张肌肉，帮助缓解眼疲劳。

Blink

眨眼

We don’t realise it, but our eyes blink differently and less frequently when we are staring at our phone or computer screen. Normally, we blink about 15 times a minute, but this drops by a third while we are looking at screens – and the blinks that do occur are typically partial blinks, meaning that during the blink phase the upper lid doesn’t come all the way down. This reduced blinking ability makes it difficult for the eyeball to remain moist, since the tears coating the eye evaporate more rapidly. If you find you have dry eyes as a result of excessive screen use, experts recommend either using artificial tears to refresh your eyes or resetting your natural blink frequency through an exercise where you blink slowly 10 times, as if shutting your eyes for sleep, every 20 minutes.