Children are prone to develop myopia in the following situations
1. Diseases.
A significant number of patients have suffered from infectious diseases such as measles and whooping cough, and most of these sick children have dilated eyes, and when the eyes are in a dilated state, the refractive power of the eyes decreases and vision is weakened.
2. Noise.
Research by relevant experts shows that when the audio intensity is above 90 decibels, the sensitivity of the optic rod cells in the retina of the fundus to distinguish the luminosity begins to decline, and the time to recognize the response to low light is prolonged, and when it exceeds 45 decibels, 40% of people have dilated pupils, and when it reaches 115 decibels, the adaptation of the eye to luminosity decreases by 20%, accompanied by a weakening of color vision.
3. Insufficient mineral elements.
Medical research shows that calcium, chromium and other minerals are an important condition to ensure normal vision in children. Calcium has an irreplaceable role in maintaining normal pressure in the eye crystal and chromium in maintaining eye refraction. Special attention should be drawn to the processing of too fine rice, noodles, will lose 80% of the chromium, deliberately eat some coarse grains beneficial to vision health.
4, eat too many sweets.
Sweets are acidic food, on the one hand, a large number of consumption of calcium elements in the body, on the other hand, elevated blood sugar, change the crystal osmotic pressure, is another bane that leads to the formation of myopia, supervise children to eat less is good. 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.
5. 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 enough sleep for 9-11 hours every night to protect your eyesight.
Myopia prevention attention to the following points.
1, the distance between people and the television set should be more than 3 meters.
2.When watching TV, there should be ambient light.
3.When reading and writing, the light should be bright, soft and stable.
4, do not read for a long time, 0.5-1 hour is appropriate, rest 10-15 minutes, strictly prevent visual overwork.
5, keep the writing distance of 30-35cm.
6.Reasonable arrangement of work and rest time.
7, refractive error to wear qualified, appropriate glasses.
The main thing is not to use the eyes for a long time, there is a break in the middle, between class activities, feel eye discomfort rest a, usually more physical exercise.