Myopia is a serious problem in today's society, and even has been regarded as a trend.
With the increase of grade, the number of nearsighted students in my class has gradually increased, which has far exceeded half of the number.
After investigation, I found that most of my classmates' eyesight is 4.8 and 4.9, and only a few students' eyesight is still above 5.0. There are 11 students who wear glasses, but there are 20 students who are short-sighted. There are only 31 students in our class! There are only 11 people without myopia!
Through Baidu, I found that myopia can be divided into three kinds. The first is axial myopia, which is caused by the excessive development of the anterior and posterior axis of the eyeball. The second one is caused by too strong bending. The third is refractive myopia, which is caused by high refractive rate and interstitial rate. composition
In view of these survey data, I would like to make a suggestion to you:
To do a good job writing, reading posture, do not lie on the table or twist the body. Books should be kept at a proper distance from our eyes. Reading, writing time should not be too long, midway to maintain a proper rest, less play computer. When reading and writing, the light should be appropriate. Vitamin B is good for the eyes. Nearsighted students should eat more zinc containing food. Do eye exercises carefully. composition
Together with publicity to protect the eyes, so that the eyes of the world more bright! Investigation report on myopia of primary school students
On Friday of this term, our school held a physical examination. When the report came out, I found that all the students in our class were short-sighted. I gave our class students a survey report on myopia of primary school students to investigate the main causes of myopia in our class.
investigation
I took the report of our class to classify and summarize, survey method, chart method, interview method, inspection method, induction method. composition
analysis
Most people usually do not pay attention to protect their eyes and lead to myopia. Do not pay attention to eye hygiene, such as watching TV and Internet time is too long and so on. It is the main reason for the increase of myopia in modern children. The investigation shows that the occurrence of myopia is closely related to whether the parents or siblings have myopia. High myopia is basically caused by heredity. Children with myopia in their parents or families should be the key objects to protect their eyesight and prevent myopia. composition
conclusion
It's too close to watch TV. Watching TV is too long. 3. The posture of doing homework is not correct. 4. Read in a place where the light is too strong or too weak. 5 long time in front of the computer. Look at the laser. 7. Not doing eye exercises seriously. 8 reading in the car. It's unreasonable to eat. 10 genetic factors.
proposal
In order to effectively prevent myopia and other eye diseases: we must develop good eye hygiene, eat reasonably, exercise, and protect Zhang's physical and mental health. Protect your eyes! A survey of myopia in our class and an analysis of its causes
"Eyes are the window of the soul", but I heard many students in our class say that they can't see the words on the blackboard clearly. In order to improve the eyesight of our class, our group made a research report on the investigation of students' myopia and the analysis of its causes.
2、 Investigation methods
1. Online to understand what is myopia and the causes of myopia. composition
2. Check the physical examination card to find out the students' eyesight status and the development trend of poor eyesight in recent years.
3. To investigate the study and living habits of students with myopia. composition
3、 Investigation and data compilation
Information channel
Aspects involved
concrete content
Online inquiry
What is myopia, and the reason that myopia produces.
Myopia is the focus formed before the retina after the parallel light enters the eye. The external objects can not form a clear image on the retina. The patient's subjective feeling is that the distance is blurred and the near is OK. The concave lens can be used to correct myopia.
The causes of myopia are: 1. Watching TV is too close. 2. Watching TV is too long. 3. The posture of doing homework is not correct.
Data (physical examination card, visual acuity test)
Students' myopia, the proportion of myopia, etc.
Of the 49 students in this class, 10 are nearsighted, accounting for 1 / 5 of the class. Compared with previous years, the number of myopia has increased.
Talk, interview, investigation
Eye habits of nearsighted students
Most students do not pay attention to eye hygiene, lying reading, reading in strong light.
4、 Conclusion
1. Myopia is caused by too thick lens, which can be corrected by concave lens.
2. Myopia is mainly caused by students watching TV, surfing the Internet, reading books and other reasons for a long time.
3. Myopia can be prevented. Do eye exercises every day, look at the distance after reading for an hour, etc. Please use your eyes scientifically, ye Junjie.
Recently, according to a survey conducted by China, the United States and Australia to prevent children's myopia, the number of myopia in China has reached nearly 400 million, ranking the first in the world. The incidence of myopia has reached 1.5 times of the world average level, and the incidence of juvenile myopia is as high as 50% to 60%. The number of myopia is increasing year by year, which has become an important problem affecting the health of our people. Please use your eyes scientifically, ye Junjie. Whenever I see you looking at distant objects, I always have to narrow my eyes. I haven't seen clearly for a long time. As you are the tallest in the class, the teacher arranged your seat in the last row. But your eyesight is already very poor. If you go on like this, it will affect your study. You can hardly see the words on the blackboard. I think, class attention you never concentrate, should also have one of the factors!
In order to recover your eyesight and make progress in your study, please keep enough sleep! Listen to my father say, keep enough sleep is to eliminate fatigue, and restore the main work, learning ability is an important factor. Because the eye muscle relaxes most fully in the sleep state, it is the easiest to eliminate fatigue, and it is also essential to ensure health. The dietary structure should also be reasonable. Research reports show that increasing protein and reducing carbohydrate supply in diet can reduce or terminate the increase of myopia in teenagers with genetic background. Therefore, in order to avoid the increase of myopia, you should take good care of your mouth, try to eat less candy or high sugar food, eat more eggs or high protein content food.
Ye Junjie, please use your eyes scientifically. The eye is the window of the soul. If the window is damaged, it should be repaired in time. Don't wait until it is critically ill to save it. When the heart has no window, how serious it should be! TV is an important tool to spread culture and information. TV programs are educational and entertaining, and they are also the source of knowledge. You can know the national and world affairs by sitting at home. However, there are some TV programs that are not suitable for children to watch. Parents should pay attention to the program content, accompany their children to watch, guide and explain to them. Children will benefit from education, intellectual development and rich cultural and recreational life.
Television is becoming more and more important in the family. Preschool children are sure to understand some programs. Because the pictures are constantly changing, they can attract children's attention. Some parents think that TV programs will make their children quiet and not run around, so they think it's good to let TV watch and control their children. Many parents encourage their children to watch TV from childhood in order to save trouble. Many parents often say to their children when they are engaged in housework or work: "don't disturb me, go to watch TV by yourself!" If children listen to this kind of words more, they will gradually take watching TV as their responsibility and think it is a must every day. This is harmful to the physical and mental health of children.
Some programs, adults watch, just feel funny. But when the child saw it, he felt terrible and cruel, which made his young mind uneasy. Then he covered his eyes with his hands and dared not look down, and even cried; some were afraid, but did not say it; some liked to associate themselves and make themselves enter the world of illusion. This shows that TV programs have unexpected effects on children's psychology. Some children often watch martial arts movies, sleep restlessly, or shout in sleep. If the child's panic persists, parents should ask the child directly, "are you afraid that these things will happen to you?" If the child admits, parents should take this opportunity to have a deep understanding of his state of mind: "tell me what you are afraid of!" After listening to his story, parents must not make fun of his childishness, let alone blame him. His parents said to him, "don't be afraid, these things won't happen to you.". If the child denies that he is afraid, he doesn't have to investigate. He can say to him, "if you feel afraid, please let me know in time.". With such a guarantee, the child will confidently tell his parents what is on his mind.
Some programs and TV plays have some bad contents, such as revenge, suicide, lovelorn, violence, theft and so on. If parents are not vigilant, children will be easily affected by it. composition
Parents should timely use these bad contents as negative teaching materials to guide children to recognize and distinguish good from evil, good from bad, so that children can get inspiration from them and realize what every upright person should and should not do.
It is beneficial and harmless for children to watch TV properly. But there are many children sitting in front of the TV all day, which will do great harm to their growth. composition
Watching TV all day will make children feel tired. It's not just the eyesight, it's the brain. The TV screen provides people with a lot of information at a high speed, so that children's small heads are occupied by a lot of input information, and the useful information will be crowded out by the tired brain. In addition, there are some contents in TV programs that are not suitable for children's psychology and understanding, together with colorful commodity advertisements, which may strengthen children's material desire.
Watching TV all day, so that children are always in a state of passive acceptance, it is difficult to understand the real world, become passive and lack of imagination. School children are addicted to watching TV, it is difficult to experience the fun of reading, writing, doing and other beneficial activities, affecting children's studies. Preschool children spend too much time watching TV, which will hinder them from playing. It is very harmful to cultivate children's imagination, expression, making friends, hand eye cooperation and other abilities.
Educators believe that TV is beneficial to the development of children's perception and memory. The characteristic of TV is that action and sound stimulate the senses at the same time, which can attract children's attention. At the same time, because the action itself is easy to perceive and remember, it can improve children's interest. For example, the dynamic characteristics of TV can make a small seed grow into a towering tree, giving children a strong impression, seeing the whole process of change, so as to deeply remember it in memory. Someone said: "a picture is better than a thousand words." The significance and value of a dynamic TV picture for children whose language development is not perfect is self-evident. In addition, TV can play a positive role in improving children's thinking ability and stimulating their imagination.
So, I think it's OK
TV can let us relax, we are tired, watching TV is not a bad thing. It can provide topics and lessons for our daily conversation