Myopia prevention and control questions and answers are divided into three parts: General Knowledge Questions, Myopia Prevention Questions, and Myopia Intervention and Correction Questions. Here we will focus on Myopia Prevention Questions.
Myopia Prevention Questions
1. Why more outdoor activities can effectively prevent myopia?
It is scientifically proven that time spent outdoors is significantly correlated with refractive error and eye axis length, and increasing time spent outdoors is the most effective and economical way to prevent and control myopia. It is generally recommended to spend at least 2 hours a day or a total of 14 hours a week outdoors in the sun. The key to outdoor activity is “outdoor”, not the content, mode, or intensity of the activity. Even on cloudy days, outdoor activities have a protective effect on vision. Be careful not to let your child look directly at the sun.
2. What kind of posture is correct when reading and studying?
Continuous, close eye use can easily induce the formation of myopia. When learning to read, it is important to maintain a reasonable distance between your eyes. It is recommended that the distance between your eyes be greater than 30 to 40 cm, and the further away you are, the better for your eyes. When writing and reading, the distance between the eyes and the book should be kept more than one foot, the distance between the body and the desk should be kept a fist, and the distance between the finger tips and the pen tip should be kept one inch when holding the pen. After 20 minutes of continuous eye use, it is recommended to take a break to look away for a few minutes and look up and away for at least 20 seconds to 20 feet away (about 6 meters).
3. What is the purpose of eye massage?
Massage the skin muscles around the eyes to stimulate the nerves, promote eye blood circulation, relax eye muscles, and relieve eye fatigue. Massage the eyes and pay attention to clean hands. Note that you should never press on the eyeball, as doing so can damage the structure of the eye.
4. Why are twice-yearly vision exams recommended?
Primary and secondary school students are in a sensitive period of refractive eye development, and most myopia occurs and develops during this period. The visual health status and related refractive eye development indicators of primary and secondary school students are constantly changing and developing during different stages of their growth and development. It is necessary to implement the whole process of vision health management, establish refractive eye development files through regular monitoring, and ensure the completeness and continuity of the file records in order to comprehensively analyze and evaluate the intervention effects and provide a more scientific and accurate basis for improving intervention programs. Early monitoring, early detection, early warning, and early intervention prevent and delay the occurrence or development of myopia, and try to avoid becoming highly myopic so that children’s vision health can be continuously and effectively managed and maintained.
5. What should I pay attention to when using electronic products?
In the case of conditions should try to choose a larger screen and higher resolution of electronic products, and try to watch from a distance. The recommended order of priority is a projector, TV, computer, tablet PC, and finally cell phone. When watching TV, the eyes should be more than 3 meters away from the TV screen or 6 times the length of the diagonal of the TV screen. When watching the computer, the distance between the eyes and the computer screen should be more than 50cm, and the distance of the cell phone is not less than 40cm. Consciously control the length of use of video and screen electronic products and reduce the use of video and screen electronic products for non-learning purposes. It is recommended that cell phones, computers, and other video and screen electronic products should be banned for children aged 0-3 years old, and children aged 3-6 years old should also avoid contact and use as much as possible. Elementary and middle school students should not use electronic products for non-learning purposes for more than 15 minutes at a time and not more than one hour a day. After using electronic products to study for one class period, they should rest and relax for 10 minutes. The younger the age, the shorter the time of continuous use of electronic products should be.
6. What should I do if my eyes feel dry and fatigued after using them for a long time?
Do not spend too much time looking at cell phones, TV, or computers. If you feel discomfort in your eyes, take a break or look into the distance. Maintain proper room temperature and humidity, and blink more often to moisten your eyes with tears. Hot compresses are one of the effective ways to relieve dry eyes and fatigue. If the dry eyes are severe, use artificial tears to relieve the symptoms or go to a medical institution for examination and treatment.
7. There are many eye patches and anti-blue light glasses on the market, are they useful for protecting your eyesight?
Eye patches can accelerate local blood circulation to a certain extent, and although they can make the eyes comfortable after use, there are no studies that show the effectiveness of eye patches in preventing and controlling, or treating myopia. Of course, any health-related supplies and equipment need to be used with caution to avoid the adverse consequences of improper operation.
Blue light refers to the part of visible light that is higher in energy and closest to ultraviolet light. Blue light in life can be roughly divided into natural blue light (from sunlight) and artificial blue light (from artificial light sources such as electronic screens, incandescent lamps, and LED lights). At present, there is no scientific evidence of whether anti-blue light is related to the improvement of myopia. Even if you wear anti-blue light glasses, your eyes will still be fatigued, dry, and sore after excessive eye use.
In short, the use of the eyes should be a combination of work and rest, not long hours of eye use.
8. What is good for the eyes?
A balanced diet is recommended, with fewer sweets, sugary drinks, and fried foods. Pay attention to a diversified diet and guide your child to eat more fruits and vegetables, consume high-quality protein such as fish and soy products, and also eat vitamin-rich foods such as carrots, cruciferous (rape, capers, radish, watercress, cauliflower, cabbage) in moderation.
Here we have to mention blueberries because blueberries are rich in anthocyanins, have the effect of activating the retina, can strengthen vision, and prevent eye fatigue and attention. And according to American, Japanese, and European scientists, regular consumption of blueberry products can also significantly enhance eyesight and eliminate eye fatigue. Medical clinical reports also show that the anthocyanins in blueberries can promote the regeneration of retinal cells in the retina, to prevent myopia and improve vision. As well as being rich in dietary fiber, vitamin C, vitamin A, vitamin E, carotenoids, potassium, and zinc. Blueberries are also one of the top five healthy fruits recommended by the World Food and Agriculture Organization.
Of course, good vegetables and fruits are good for the eyes, the core problem is that we can not overuse the eyes, otherwise eating more food that is good for the eyes will not help.
9. Can staying up late affect vision health?
Adequate sleep is important for the physical development of children. Some studies have shown that sleep also has an effect on the development of myopia. Normal circadian play an important role in the development of the human eye, sleep disturbances may disrupt or interrupt the regulatory mechanisms that control the growth process of emmetropia.
Young children and elementary school students should get no less than 10 hours of sleep per day, middle school students no less than 9 hours of sleep, and high school students no less than 8 hours of sleep.