Q: According to the survey, there are more than 5 million blind people in China, and there are nearly10 million people with low vision, especially children and adolescents. The prevalence rate is extremely high. According to the latest data from the national student physical health survey, the incidence of myopia in primary school students, middle school students and high school students in China is 22.78%, 55.22% and 70.34% respectively. What's even more shocking is that a survey report says that there are more than 300,000 people who are blind due to high myopia in China. Therefore, students, parents and society pay more and more attention to the prevention and treatment of myopia in children and adolescents. Why are more and more teenagers suffering from myopia? What should children do with myopia? Is it just caused by bad eye habits? In order to understand the myopia of middle school students and the related factors that cause myopia, I made a survey on some seventh-grade students in our school. Second, the questionnaire In order to prevent middle school students from myopia, we issued this questionnaire for the majority of middle school students. Are you nearsighted? A. Yes, B. No.2. Why are you nearsighted? (Don't answer if you are not nearsighted) A. Watching TV too much B. Sitting improperly C. Other 3 How nearsighted are you? A./kloc-below 0/00, below B. 500 and above C. 4. How many years have you been nearsighted? A. less than one year B. less than five years C. others 5. Are most of your classmates nearsighted? A. Yes B. No.3. Investigation and analysis: Causes of myopia: Most people usually do not pay attention to protecting their eyes, which leads to myopia. The results show that myopia is the adaptive change of human eyes to the contemporary environment, and its occurrence and development are closely related to the increase of eye activity environment and the imbalance of nutrient intake. Improper use of eyes and inattention to eye hygiene (such as watching TV and surfing the Internet for too long) are the main reasons for the sharp increase of myopia in modern children. 1 Too close to watch TV, too long to watch TV, too deep to watch TV, incorrect posture for homework, too strong sunlight to read, too weak light to read in front of the computer for a long time, unreasonable diet, watching laser, reading in the carriage, 1 12. Do not do eye exercises seriously. 4. Survey results: Through the survey, it is found that the myopia rate of middle school students is rising, but middle school students do not pay attention to this phenomenon. Some people even think that they are nearsighted, just wear a pair of glasses. It doesn't matter if you are nearsighted. Many people often blame it on bad eye habits, such as improper reading distance, too dim light, long-term eye use and so on. However, medical research in recent years shows that unbalanced diet, lack of sleep and noise are also important factors that induce myopia in adolescents. 5. It is suggested (1) that when reading a book, the posture should be correct and the light should be sufficient. When reading and writing, sit one foot away from the desk, keep your chest away from the desk and your eyes away from the textbook. (2) Don't read while riding or walking, and don't read while lying down. Read and write 1 hour, overlook 10 minutes, or go outdoors to adjust your eyes and muscles. (3) Always order eye drops, such as Zhen 'ai Eye Drops, Mingmu Eye Drops and Pearl Eye Drops. Insist on doing eye exercises for ten minutes between classes. (4) Try to surf the Internet or watch other radioactive things as little as possible. Pay attention to the schedule and don't let your eyes be tired for a long time. (5) Don't be partial to food, eat less spicy food, eat more foods containing vitamin C and vitamins A and D ... (6) Go to the ophthalmology department for regular examination, follow the doctor's guidance, and gradually correct your vision or prevent myopia from deepening. 6. Experience is to effectively prevent eye diseases such as myopia: First, we should develop good hygiene habits, eat reasonably, exercise and ensure physical and mental health; Second, we should correct bad habits and develop good eye hygiene; Third, we should regularly check our eyes in eye hospitals, especially patients with high myopia, and find eye diseases in time, so as to achieve early detection and early treatment. Vision is related to our life. We should take good care of our eyes and don't let us regret it in the future. Facing the challenge of visual crisis in 2 1 century, we should be brave enough to accept the challenge and defeat the enemy!

Report to the authorities

Environmental Investigation Report In recent years, with the rapid development of regional economy, the problem of environmental pollution has become more and more serious. Preventing environmental pollution, protecting the environment and maintaining ecological balance have become important measures for social development and the obligation of every citizen. The following is the report of field investigation: The pollution sources that cause environmental pollution are: 1. The excrement discharged from public toilets gives off an unpleasant smell, which makes people sick. 2. The wastewater discharged from the factory is black and smelly, with some dirt floating. The exhaust gas from the factory is very pungent and will be distributed to every corner of the town. 4. The gas discharged from chemical fertilizer plant contains dust, lead, coal ash and other substances harmful to human body. There are often rubbish discarded by tourists on the park lawn, which is unsanitary and affects the city appearance. The pollutants that cause environmental pollution are: waste water, waste gas, feces, carrion, plastic bags, wooden chopsticks, garbage and so on. Pollutants do great harm to the environment and biology: they make the air turbid and do great harm to people's lungs; Poor treatment of domestic garbage will breed bacteria and seriously affect people's health; Sewage will affect domestic water and directly infringe on human body. After reading so much, are you worried about the present environment? Yes, the environment is closely related to our life. Protecting environmental sanitation starts from me, from now on: no spitting; No littering; Refuse to use disposable wooden chopsticks; Waste batteries and plastic bags should be disposed of; More afforestation, not trampling on the lawn; Don't pollute the water source. We have a responsibility to protect the environment.