Many people might think that when their eyes are tired, taking a stroll on the grass or admiring the distant trees can quickly help restore their vision.
 |
| The color red causes eye strain, while blue helps reduce stress (Image: wuarchive) |
Indeed, the color blue is very beneficial for those with weak eyesight. Even for individuals with normal vision, taking time to look at the color blue can help protect their eyesight.
So why is frequently looking at blue beneficial for the eyes? Nature presents a variety of colors, each evoking different sensations in people. For instance, red and yellow can make one feel a sense of glare, while green and blue offer a sense of tranquility and lightness. Each color has different light absorption and reflection properties; for example, the light reflection rate of red is 67%, yellow is 65%, green is 47%, and blue is 36%. This explains why red and yellow are more glaring compared to blue and green.
Due to the neutral absorption and reflection of light by blue and green, the human nervous system, cortex, and retina can adapt more easily. The green of plants can reduce the harmful effects of ultraviolet light reflecting into the eyes, thus lessening eye stimulation. Therefore, if you have free time to enjoy the sights of plants and flowers, it will greatly benefit in reducing eye strain.
