Currently, parents are more aware of the more common factors that cause myopia in children’s eyes, such as television, computers, and cell phones. However, there are other factors that cause myopia in children’s eyes that are more hidden and usually unnoticed by parents. We will also call them vision killers. 1, noise Currently, parents are not aware of the various types of noise on children’s vision also has a certain impact, when the noise intensity reaches 90 decibels, the sensitivity of human visual cells decreased, noise to 95 decibels, 40% of people will appear pupil dilation, blurred vision, when the noise reaches 115 decibels, close to the noise will appear color vision, visual field abnormalities. Usually, the noise of the washing machine running in the home can reach 40 to 70 decibels, while the noise of the TV and computer can reach 60 to 80 decibels, and if the sound is turned up too much, the noise can reach 90 to 110 decibels. Coping strategies: When children are studying or resting at home, try not to open the stereo, TV and computer to turn down the sound, away from the ears of children. 2, sweets Excessive consumption of foods with high sugar content can lead to a decrease in trace elements such as chromium. When the body’s chromium content decreases, the elasticity of the tissue at the back of the eye decreases and the eye axis tends to become longer, forming axial myopia. At the same time, the intake of too much sugary foods will excessively consume the body’s vitamin b1 content, which directly affects the supply of vitamin b1 to the eye nerve. Coping strategies: eat less sweets and supplement foods high in vitamin b1, such as dairy products, egg yolk, purple cabbage, celery, oranges, etc. 3, too early to learn piano painting As we all know, when learning piano, children need to read the music and stare at the use of fingering, this frequent eye gaze object conversion will lead to visual fatigue, excessive fatigue accumulation will form children myopia. When children learn to draw, they need to stare at the picture in front of them for a long time, which will also lead to visual fatigue. Strategies: Practice piano, try to take a break after 45 minutes, and use light green or light yellow paper to copy the music to reduce eye fatigue. When learning to paint, close your eyes and rest on time, usually choose half an hour as a painting period.