What Damage Will the Eyes Cause When the Sun Shines Directly on the Eyes?
The reason why outdoor activities can prevent myopia is the sun's rays outdoors.
This may make many people mistakenly understand that the sun shines directly on the eyes and the eyes look directly at the sun.
Appropriate stimulation of the sun's rays can assist the normal development of the child's eyeballs, and can also promote the secretion of dopamine. The increase in the secretion of dopamine in the eyes can significantly slow down the growth of the eye axis and prevent the increase of myopia.
But in outdoor activities, the safe way to receive the sun’s rays is not to look directly at the sun. It is best to go to the shade of the tree. The intensity of the sun’s rays under the shade is between 5556-7876 lux. This intensity is sufficient to promote dopamine secretion. It is safest to stay in the shade of the tree to receive the sun's rays. Strong ultraviolet rays will also weaken the eyes after the leaves block the reflection. You can also increase the eye protection activity of looking far away to relieve the fatigue of the ciliary muscles.
And if you look directly at the sun and let the sun shine directly on your eyes, you will be blinded no matter if you are nearsighted or not, and it will not have the effect of preventing myopia and protecting your eyes.
The sun tends to be relatively large in summer, and if you go out to sunbathe at noon, you will generally feel terribly hot. This thermal phenomenon just shows that the sun at this time, the energy of red light and infrared light is very high. Red light and infrared light have relatively long wavelengths, relatively low frequency, and insufficient energy. Therefore, they can penetrate the gap between atoms and molecules, but cannot penetrate into the interior of atoms and molecules. In the process of penetrating the gap between atoms and molecules, they will accelerate the vibration of atoms and molecules, increase the distance between them, increase the energy of thermal motion, and produce thermal effects. So when you go directly to the sun, the red light and infrared light are also very high.
Excessive red light energy can cause "solar retinitis" in which the retina and macula are burned on the one hand. The macula is the most sensitive part of the retina. The light is focused here to form a clear image. Once looking directly at the sun for a long time, causing burns to the retina and macula, there will be no way to return to normal.
In addition, many studies have confirmed that long-term exposure to high-energy red light will accelerate the growth of the eye axis and increase the degree of myopia.
So when you go outdoors, pls don't look directly at the sun or take a long time in the sun. This cannot prevent myopia, but will promote the occurrence and development of myopia. It can also burn the retina and macula, causing irreversible damage to the eyes.
