Children’s nearsightedness is now increasing, and parents are really heartbroken. All kinds of food and supplements, such as pig liver, carrots, and corn, still can't stop the children from wearing glasses.
In fact, myopia is the result of a combination of genetic factors and environmental factors. If both parents are short-sighted, then their children are more likely to be short-sighted than children whose parents have normal vision.
As for environmental factors, the main reason is to use eyes at close range for a long time. Nowadays, children spend too much time indoors, go to school, cram school, interest class, plus use mobile phones, watch dramas, play games, etc., they all use their eyes at close range for a long time. If these habits remain unchanged, even after myopia surgery, it is still possible to get myopia again.
In fact, the easiest and most effective way to prevent myopia is to let children participate in outdoor activities.
It is worth noting that the principle of outdoor activities to prevent myopia is related to bright light stimulating the eyes and exercise to regulate the tension of the ciliary muscle. Therefore, for outdoor activities to effectively prevent myopia, two conditions must be met: bright enough light and long enough time, both are indispensable.
How bright is it bright enough? Of course it is not staring directly at the sun, it is almost the brightness of the outdoor shade in sunny weather, or the brightness of a general cloudy day. How long is
long enough? The current general recommendation is to be outdoors for at least 2 hours a day and at least 10 to 14 hours a week to prevent myopia more effectively.
In fact, my country’s "Guidelines for Suitable Techniques for the Prevention and Control of Myopia in Children and Adolescents" clearly pointed out: Every day should be active outdoors under bright light for at least 2 hours, and ensure that more than 1 hour of physical exercise time.
So, if you want to keep your child from being short-sighted, this simple and effective method must be remembered: let your child spend at least 2 hours of outdoor activities under bright light every day!
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