The visual environment is one of the risk factors for myopia, and families and schools should actively create a friendly visual environment to jointly care for children's bright future. Recently, Beijing Disease Control WeChat official account released relevant tips. How to create a visually friendly home environment? One is to equip appropriate tables, chairs, and lighting to ensure a suitable reading and writing environment. Try to prepare adjustable study desks and chairs for your child, and regularly adjust the height of the desks and chairs according to your child's height. The appropriate height of the desks and chairs makes it easier for the child to maintain the correct reading and writing posture, and is not easy to fatigue. In addition to preventing and controlling myopia, it can also have a preventive effect on abnormal spinal curvature. The study desk is placed by the window, with the long axis of the desk perpendicular to the window. Natural light shines in from the opposite side of the writer, avoiding hand shadows that may affect vision during writing. Too strong or too dark light can have adverse effects on the eyes. Choose a desk lamp with "CCC" certification, and place it in front of the opposite side of the writing hand. When children read and write at night, they should use both the room ceiling light and desk lamp to ensure that the reading and writing surfaces are well lit and coordinated with the surrounding environment. Help and supervise children to maintain correct pen grip and sitting posture while reading and writing, achieving "one foot, one inch, one fist". Especially the distance of one foot is important but easily overlooked. The second is to make reasonable choices in the use of electronic products and create a good screen usage environment. When online learning is needed, provide children with large-sized screen electronic products such as televisions and desktop computers. Choose electronic products with high screen resolution for the same screen size. Pay attention to the placement of electronic products and ensure a safe viewing distance. The viewing distance of the TV should not be less than 4 times the diagonal distance of the screen, the horizontal viewing distance of the computer should not be less than 50cm, and the viewing distance of the mobile phone should not be less than 40cm. Control the usage time of electronic products. Preschool children should use electronic devices as little as possible, and primary and secondary school students should not accumulate more than 1 hour of non study video time per day. You can set the time for using electronic products with your child in advance, and use an alarm clock, hourglass, or timer to remind them of the timing. Even if the screen is in "eye protection mode", it is necessary to control the usage time of electronic products to reduce symptoms such as visual fatigue and dry eyes caused by long-term close eye use. Parents should lead by example, try to put down their phones, spend more time with their children, and ensure that the whole family takes care of their eyes and one heart. The third is to create a good sleeping environment and have a regular routine of going to bed and waking up early. The use of artificial lighting and electronic products at night can easily cause disturbances in the circadian rhythm, increasing the risk of myopia. Children should not have televisions or computers in their bedrooms, use dark curtains at night, sleep without turning on night lights, and maintain a dark environment for sleep. Help children establish a schedule and arrange their daily routine reasonably. Go to bed on time on weekends, holidays, and school days, and have a regular schedule. How to create a visually friendly environment for schools? The school provides students with good lighting and lighting environment in accordance with the Hygienic Requirements for Myopia Prevention and Control of Children and Adolescents Learning Supplies (GB40070-2021), ensuring the illumination and uniformity of classroom blackboards and desks. Each classroom is equipped with adjustable desks and chairs or 2-3 models of desks and chairs according to the height range of students. The desks and chairs of the same model can be arranged in rows. The height of desks and chairs should be adjusted once a semester and replaced at least monthly
Edit：GuoGuo Responsible editor：FangZhiYou
Source：people.cn
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