The distance between reading and writing eyes and books should not be less than 30 cm, preferably 33 cm, so as to conform to the physiological mechanism of eyes and prevent eye fatigue.
There are three ways to learn to write: the distance from the finger to the pen tip is one inch; The distance from the abdomen to the table is a punch; The distance between the eyes and the book is one foot. So the best distance between eyes and books is 33 cm. When the distance is too close to less than 25 cm, the adjustment ability of the eyes will be obviously enhanced. After a long time, the eyes will be tired, sour, swollen and tearful, and it is easy to develop myopia.
In order to protect your eyes, when reading and writing, don't bend over, don't read on your desk, and don't read sideways in bed. The distance between eyes and books should be 30-35cm, the distance between body and desk should be 10cm, and the angle between books and desk should be 30-45 degrees.
If you put the book horizontally on the desktop, you should lean forward slightly when reading, so it is easy to move the book close to your eyes, which will increase the burden on your eyes by 2-3 times, thus causing fatigue of the neck muscles and the back of your neck. Unconsciously leaning forward for a long time will lead to decreased vision.
Methods of protecting eyesight
1. Develop good eye habits: ensure sufficient light in the environment and correct eye distance, control eye use time at close range, take proper rest, and pay attention to correct sitting and writing posture.
2. Healthy living habits: ensure adequate sleep and stable mood, eat more fruits and vegetables, especially foods containing vitamin A, and teenagers should engage in outdoor activities for at least 2 hours every day.
3. Check your eyesight regularly: Check your eyesight regularly and treat the problems in time.