1. Research reason:

According to the survey, there are more than 5 million blind people in China, and the number of people with low vision is nearly10 million, especially children and adolescents, with a very high prevalence rate. 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 there more and more nearsighted students? What about students' myopia? Is it just caused by bad eye habits? In order to understand the myopia of primary school students and the related factors that cause myopia, I made a survey on some students in our school.

Second, the questionnaire

1. Are you nearsighted?

A.yes, b no.

2. Why are you nearsighted? (Don't answer unless you are nearsighted)

A, watching too much TV B, sitting improperly C, others

How nearsighted are you?

A./kloc-below 0/00, below B. 500, above c.

Third, investigation and analysis: causes of myopia:

Most people usually don't 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 Watching TV too close.

Watching TV for too long

The picture density of TV is too deep.

4 posture is not correct when doing homework.

Read a book in too strong sunlight

6 reading in weak light.

Sitting in front of the computer for a long time

8 unreasonable diet

9 observation laser

10 reading in the carriage

1 1 genetic factors

12 not doing eye exercises seriously

Fourth, the survey results:

Through investigation, it is found that the myopia rate of middle school students is on the rise, 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.

Verb (abbreviation of verb) suggestion

(1) When reading, 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) 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, and eat more foods containing vitamin C and vitamins A and D. ..

(six) to the ophthalmology department for regular examination, listen to the doctor's guidance, and gradually correct vision or prevent myopia from deepening.

Sixth, experience

In order to effectively prevent myopia and other eye diseases: 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 later!

This is another survey:

I look up information on the Internet to find out how ordinary people get myopia.

2. I called my classmates and friends suffering from myopia and asked them how they were nearsighted.

3. I went to Mianyang Eye Hospital to consult Dean Zhao about the causes of myopia of primary school students.

analyse

In my investigation, I found that myopia developed rapidly at the age of 12 ~ 18. The incidence of myopia was 22.78% for primary school students, 55.22% for middle school students and 70.34% for high school students. The number of people suffering from myopia is increasing every year, and the degree of myopia is greatly increased, and there are not a few thousands of degrees of myopia. Preschool children don't use many eyes, but the proportion of myopia has also increased greatly.

conclusion

1. Preschool children suffer from myopia mainly because of congenital eyeball dysplasia. Amblyopia, strabismus, astigmatism and other eye diseases can easily lead to myopia.

2. Pupils' myopia is mainly caused by watching TV and computer for too long; Reading and writing do not pay attention to distance and posture, light and lighting; Not doing eye exercises seriously and other factors lead to eye fatigue, which leads to myopia or aggravation.

3. In addition to the above reasons, middle school students' myopia is aggravated by heavy learning tasks, heavy pressure, more homework and less outdoor activities.

4. Genetic factors, environmental pollution and unbalanced nutrition intake are also important causes of myopia.

5. Failure to treat or wear glasses in time after suffering from myopia will aggravate the degree of myopia.

Kenichi

In order to effectively prevent eye diseases such as myopia:

1, to develop good living habits, reasonable diet, not partial eclipse, eat more foods containing vitamin C and vitamins A and D.

2. Correct bad habits, develop good eye hygiene habits, read and write correctly, have sufficient light, and insist on doing eye exercises.

3. Try to surf the Internet or watch other radioactive things as little as possible, and keep your eyes from getting tired for a long time.

4, to regularly check to the eye hospital, timely detection of eye diseases, timely treatment, follow the doctor's guidance, and gradually correct vision or prevent myopia from deepening.