How to effectively prevent and control myopia in the new semester? The answers that everyone is concerned about are all here
CCTV News: Currently, all primary and secondary schools have started school. After a long summer vacation, have the children's eyesight declined and the degree of their "little glasses" increased? How to better prevent and control myopia in the new semester? On September 1st, the National Bureau of Disease Control and Prevention released the "Expert Answers on Public Health Intervention Technology for Myopia Prevention and Control in Children and Adolescents", let's pay attention together.
Research suggests that higher outdoor light levels can promote the release of more dopamine from the eyes, delay axial growth, and thus prevent myopia. Therefore, school-age children should engage in outdoor activities for up to 2 hours during the day. During school, the insufficient outdoor activity time should be made up on weekends, and at least 14 hours of outdoor activity per week should be achieved. Kindergarten children advocate for 3 hours of outdoor activity during the day, and more childcare content should be placed outdoors. If parents find it difficult to ensure that their children have 2 hours or more of outdoor activity time every day, they can make more use of fragmented time to make up for it.
Nowadays, both learning and life cannot do without electronic products. What are the requirements for schools and families to choose electronic products, and how to use them correctly? Research suggests that the screen brightness, ambient brightness, viewing distance, and exposure time of video electronic products are the main factors affecting the vision of children and adolescents. When choosing electronic products for families, it is recommended to use them in the order of projector, TV, computer, tablet, and mobile phone. The overall principle is that the larger the screen, the better the resolution, and adjust the brightness according to the environment. When the surrounding environment is dark, turn on the room lighting to avoid using electronic products in excessively dark environments. 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 50 centimeters, and the viewing distance of the mobile phone should not be less than 40 centimeters.
Experts say that so far, there is no method that can cure or reverse myopia. In the clinical treatment of myopia, it is indeed possible to see a very small number of children and adolescents with myopia, who may experience brief axial regression or a decrease in myopia degree. This is related to strengthening outdoor activities, reducing close range eye use, and using some medical methods. However, axial regression or a decrease in close range eye degree are very rare in clinical practice. If the intensity of close range eye use increases in the later stage, myopia degree will still increase again. Any treatment method that claims to be able to reverse myopia and retract the axis of the eye is an exaggeration and false advertising.
Experts say there is currently no evidence to suggest that anti blue light glasses have the effect of preventing myopia. Firstly, beneficial blue light does not require protection, and only when the energy of shortwave blue light is sufficiently high will it cause damage to the retina. But in daily life, such high-energy blue light usually does not appear. Therefore, in daily life, it is not necessary to wear anti blue light glasses to prevent myopia. However, once a child experiences myopia, parents must choose a reputable hospital to provide their child with optometry and glasses to prevent further development of myopia.
