Why does it have to be outdoors? ✦
sunshine
The essence of getting children involved in outdoor activities is to embrace the sunshine! Sunlight is like a painter of nature, gently shining on our retina, just like a negative film in a camera, stimulating us to secrete dopamine. Do you know? The retina is actually a delicate neural network from the brain, as thin as a cicada's wings, but it carries 9 different cells, like a miracle of life. Let us let the children's eyes dance with the natural sunlight under the blue sky and white clouds outdoors, and feel the unique vitality and vitality.
After the baptism of nature's sunlight, the secretion of dopamine is stimulated. This miracle substance slows down the growth rate of the eye axis. A major study in the medical community found that those children who insisted on spending two hours outdoors a day had a significant delay in myopia, with an average reduction of 15 degrees per year. However, this number may seem insignificant, especially for children who are already deeply myopia.
The effect of dopamine on the eye axis is like a breeze blowing through the surface of a lake, slowing down the growth of the eye axis by 003 to 008 mm. However, once the myopia gene is activated, the growth of the eye axis is like a torrent of water, and the increase can reach 04 to 12 mm. It's like a raging fire that can't be extinguished by a glass of water alone. Therefore, even if the child insists on two hours of outdoor activities every day before myopia, the weak sunlight still cannot curb the spread of myopia.
What is Dopamine? ✦
sunshine
Dopamine is a neurotransmitter that can be understood as a signal for communication between nerve cells. At the same time, dopamine is also a neurotransmitter that produces happiness.
In the retina of the eyeball, there is a special group of nerve cells that, like industrious workers, are responsible for the production of dopamine. And this dopamine secretion, like a magical magic sword, can slow down the growth rate of our eyeballs. As we all know, sunlight and atropine are two of the best gems that stimulate the retina to produce dopamine. That's why we emphasize spending at least two hours outdoors a day, and why doctors recommend low concentrations of atropine when children are nearsighted**.
Why is it required to be outdoors? ✦
sunshine
Only sunlight outdoors is strong enough and spectrally intact enough to stimulate dopamine secretion in the retina. No matter how bright the indoor lighting is, its illuminance cannot be compared with the sunlight. Natural light can reach 5,000 lux in the shade of the trees, and in summer it can climb to a staggering hundreds of thousands of lux. In comparison, the illuminance of indoor lighting can only be compared with it, and cannot be compared. According to experiments and references, dopamine produced by 10,000 lux can prevent the rapid growth of the eyeball.
Through previous experiments, we found that red light, ultraviolet light, and mild blue light can slow down the development of the eyeball. Specifically, red light refers to light with a wavelength of 620 nanometers, ultraviolet light at 375 nanometers, and blue light at 470 nanometers. But we have to point out that this doesn't mean that you just need to shine on these three rays. Because in addition to the type of light, there is also the question of the optimal mixing ratio. We are not yet clear which mixing ratio produces the optimal dose of dopamine. Therefore, the best solution is still to expose children to outdoor sunlight, because to date, there is no lighting device that is consistently and effectively able to prevent myopia.
However, once the myopia gene is activated, without reasonable control and intervention, the child's eye axis growth rate is at least 04 mm, and even up to 12 mm. Outdoor activities are very helpful to myopia, the activation of myopia genes is very terrible, and another purpose of outdoor activities is to lock myopia genes. The parallel light of outdoor objects enters the fundus to promote the normal growth and development of the eye.