If the human eye wants to see clearly, light must first enter the eyeball and focus accurately on the retina.
If the eyeball is too long, the light will no longer be able to gather in the retina, resulting in myopia.
While children develop height, their legs and feet become longer and their arms become thicker. As an organ, their eyes will also become longer.
The longer the eyeball, the deeper the myopia. Just like growing taller, the eyeballs will not shorten, so myopia will only increase but not decrease.
Whenever a person develops, the degree of myopia will increase. Generally speaking, the growth of adolescents' myopia gradually slows down after the age of 12 to 14, and is basically stable by the age of 18 to 22.
This prescription is called "outdoor activities", and the active ingredient is "outdoor", not "activity".
Stay outdoors for 40 minutes more every day (even if you sit on the lawn and don’t move), the incidence of myopia can be reduced by 9%; play table tennis indoors for 2 hours every day, but the effect is not obvious.
Expert tip: The "magic" of outdoor environment!
Everything on the earth grows up in the sun. Without the influence of natural light, it will grow wildly without feedback. This is true for flowers and plants, and so is the eyeball. Furthermore, most objects outdoors are far away, and even without looking at it (such as the sky or the distant sea level), it will form protective defocus on the retina, allowing the eyeball to develop more naturally rather than overgrowth.
Content source: Renwei Health
