First of all, the topic is put forward:

Many students in our class have brought glasses one after another, and I am one of them. How many people are nearsighted? Why are they nearsighted again? I did a survey.

Two. Investigation method:

1. Consult related books to find out how ordinary people are nearsighted.

2. Investigate and ask classmates how they are nearsighted.

Find out how many people in my class are nearsighted through various channels.

4. Publish the questionnaire through the class blog.

Three. Investigation and data collation:

There are 1 1 people with myopia in my class.

The myopia rate in China is close to 30%, 22.7% of primary school students suffer from myopia, and the myopia rate in junior high school has soared to 55.8%. 70.3% of high school students wear glasses, and the myopia rate of college students is as high as 80%.

There are many reasons for myopia. According to our guess, there are genetic factors, environmental factors, individual factors, nutritional factors and sleep factors. The main causes of myopia in primary school students are doing homework too late, not getting enough sleep, watching TV and playing computer too much, and consuming a lot of German and protein.

The myopia rate of primary school students is very high now. Although myopia has some genetic factors, what is more important is the influence of external factors. At present, there is no more effective treatment except wearing glasses, and only permanent preventive measures can be taken. Although the high myopia rate of middle school students is related to the current education system, it is more due to the habit of using eyes. The key to prevent myopia is to develop good eye habits.

Four. conclusion

Through the analysis of the questionnaire, I found that:

1. Generally speaking, the homework burden of most students is very heavy, and it increases with the growth of grades.

2. No matter what grade you do your homework, you don't have a good rest for your eyes; The rest time at school once again shows a trend of decreasing with the increase of grade.

3. Anti-fatigue eye drops and eye exercises have therapeutic effects on eyes, but they have not attracted the attention of students.

Although there are many more people who are nearsighted than those who are not, people who don't wear glasses still account for a considerable proportion. This shows that students pay insufficient attention to myopia!

5. The factors, such as incorrect posture and improper use of eyes, can be overcome and corrected as much as possible; For example, if the light is too dim or too strong, we can adjust it. We can try to avoid such things as improper protection and improper medication; ……

I made the following suggestions:

1, insist on overlooking, eye exercises and recess exercises every day, and actively participate in cultural and sports activities.

2. There should be enough light when studying, and the light should always be from the left. Don't read or write in weak light, dazzling sunlight and strong light.

Don't sleep in bed or read while walking. Don't read and write at your desk.

4. Don't use your eyesight for a long time. Every 50 minutes of study, rest 10 minutes.

5. Don't watch TV too often for too long, and control it within 1 hour. Not too close. At least two meters apart.

Remember the advice given by ophthalmologists: develop good eye habits: read books, surf the Internet and watch TV for no more than an hour, don't read books in too strong and dark light, be sure to pay attention to your writing posture, and it is very important to keep doing eye exercises.