1, sleep deprivation 10-13 years old is the peak of myopia formation. If children of this age do not get enough sleep, the sympathetic and parasympathetic nerve function is out of balance, resulting in disorders in the regulation of the ciliary muscle of the eye, so ensure that you get a full 9-11 hours of sleep every night to protect your vision and prevent myopia in children. 2, disease A considerable number of patients have suffered from measles, whooping cough and other infectious diseases, most of these sick children appear eye bulge, and the eye is in a dilated state, the refractive power of the eye decreased, vision is weakened. 3, noise Research by experts shows that when the sound intensity is above 90 decibels, the sensitivity of the retinal cells in the fundus to distinguish between light brightness begins to decline, the time to identify the response to low light is prolonged, more than 45 decibels, 40% of people with dilated pupils, up to 115 decibels, the eyes to the brightness of the adaptation of 20%, accompanied by the ability to weaken color vision. 4, eat too many sweets Sweets are acidic foods, on the one hand, consume a lot of calcium elements in the body, on the other hand, raise blood sugar, change the crystal osmotic pressure, is another bane that leads to the formation of myopia in children, supervise children to eat less is better. 5, passive smoking German experts found that tobacco contains a more toxic cyanide, which accumulates in the body to a certain extent, can cause toxic amblyopia. And children’s eyes are in the developmental period, more sensitive to the harmful substances in tobacco. 6, video game consoles Video game consoles have a considerable impact on vision. The flickering picture on the fluorescent screen increases the burden on the eyes, forcing the ciliary muscle to be highly tense, making the lens hyperflexion, increasing refraction, which can lead to ciliary muscle spasm over time, which is also a major cause of myopia in children. 7, insufficient mineral elements Medical research shows that calcium, chromium and other minerals are an important condition to ensure that children’s vision is normal, calcium in maintaining the normal pressure of the eye crystal, chromium in maintaining eye refraction and other aspects have an irreplaceable role. Special attention should be drawn to the fact that over-processed rice and noodles will lose 80% of the chromium, and deliberately eating some coarse grains is beneficial to vision health. Can prevent myopia in children.