When reading, stay at least 30 cm away from the book. Of course, it also depends on the height of your stool and table. In principle, it is best to sit up straight, and then put the book in a far place where you can see clearly.
Visual fatigue, also known as visual fatigue, is a common eye disease, which directly affects people's work and life.
Eye fatigue is mainly due to the fact that when people concentrate on watching the screen of electronic products such as TV, computer or mobile phone, the number of blinks in their eyes decreases, resulting in a corresponding decrease in tears secretion, and the flashing screen strongly stimulates their eyes. Eye fatigue can also cause and aggravate various eye diseases. The best way to relieve eye fatigue is to rest your eyes.
: Precautions for protecting eyesight
In life, we can turn our eyes, which is only the simplest way to protect our eyes. We really should keep blinking, because it can make blood flow in our eyes. When our eyes are slightly tired, blinking a few times can relieve fatigue. After going home at night, you can apply a hot towel to your eyes for a few minutes, and then apply a cold towel for a few minutes. The effect is also very good.
You can do eye exercises if you have nothing to do. After working for a period of time, you can look at the distance for three minutes, then look at the palm for two minutes, and then look at the distance. This exchange several times can eliminate eye fatigue, or look at the green plants in the distance. Do a good job of eye washing at ordinary times.
Many people often stare at the computer screen, so their eyes will feel tired and disturbed. If you work in front of the computer for a long time, you can put a humidifier next to the computer, or you can put some green plants or a basin of water next to the computer. Be sure to avoid the air outlet of the air conditioner directly facing the eyes, which can also protect the eyes and reduce the damage of electromagnetic radiation to the eyes.
References:
People's Daily Online: What are the ways to protect your eyes?