I came across some information today from a local Chinese discussion group regarding the effects of using eyes at close range, he/she does not only focus on eyes, but consider the whole human body as a whole system, very interesting, so share with you guys.
First: let me put the original text here for those who can understand Chinese
So what are the effects of using eyes at close range?
First of all, it is the call of adjustment. The permanent call of adjustment will start the induction process of the integral system. When the duration is long enough, the signal that stimulates the progress of myopia will begin to be transmitted.
Second, the pressure of the close assembly state and the continuous asymmetrical pressure of the extraocular muscles will have a shaping effect on the eyeballs of young children, which tends to be prolate.
Third, using eyes at close range produces serious conflicts and contradictions between sympathetic nerve and parasympathetic nerve excitement. The sympathetic nerve excitement brought about by continuous attention is in conflict with the parasympathetic nerve excitement to maintain adjustment when looking close. As a result, the nerve excitement rhythm is disordered.
Fourth, the eye pressure, apnea, and blood carbon dioxide concentration increase due to continuous lowering of the eye.
Fifth, when the eyes are continuously used at close range, the overall image of the fundus tends to be defocused in peripheral hyperopia.
Sixth, the continuous challenge of using close eyes to the habit of perception of body space makes the posture abnormal, and the abnormal posture further intensifies the promotion effect of close eyes on myopia.
Seventh, when the eyes are used at close range, the overall vision is more blurred rather than clear, leading to the progression of form deprivation myopia.
Eighth, the parasympathetic nerve overexcited after prolonged close use of the eye causes the dark focus to move closer, which is a common mechanism before myopia occurs.
Ninth, long-term use of eyes at close range leads to too long a quiet time for the body and too little time for activity, which affects the overall health of the body. The so-called long-term thinking hurts the spleen and long-sightedness hurts the liver. It causes myopia to accelerate by disrupting the body’s internal metabolic rhythm .
Tenth, due to short-distance writing work with eyes, high illumination cannot be used. Long-term low-light illumination will destroy the rhythm of the light cycle of vision and cause the progression of myopia.
Any myopia prevention and control program that does not interfere with the use of eyes at close range is a hooliganism.