After staring at books or electronic screens for a long time, many people occasionally go to the window to look at the distant grass or green trees. After a while, they feel that their eyes are really comfortable, and they feel that the green grass and green trees are really "eye-catching". In fact, this "credit" for relieving eye fatigue comes more from the action of "looking into the distance" to relax the ciliary muscles. Of course, green is indeed relatively mild, and relatively warm colors such as red and yellow are less irritating to the eyes, which may give people a soothing feeling more easily.

Extended data:

No matter students, office workers or the elderly who are studying, they should take a break after using their eyes for more than 1 hour at close range. It is best to look out for more than 10 minutes, which not only relaxes the eyes properly, but also relieves the pressure of study and work a little.

People who often need to stare at the computer screen, suggest that the computer screen should be facing away from the window or sideways to avoid reflection. In addition, it is suggested that the distance between the eyes and the computer screen should be kept at about 50 ~ 70 cm, and the screen should be slightly lower than the horizontal position of the eyes10 ~ 20 cm, with a downward viewing angle of15 ~ 20 degrees. Such a distance and angle can help reduce the probability of eye fatigue.

Reference: People's Daily Online-Look at the green, don't protect your eyes, "look into the distance" to relieve eye fatigue