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 of the national student physical health survey, the incidence of myopia in primary school students, middle school students and high school students in China is 22.8%, 55.2% and 70.3% respectively. Why are so many people nearsighted? Is it just caused by bad eye habits? Myopia, is it related to age?

Second, the survey method:

1. Consult relevant books, investigate and ask students, and understand the main causes of myopia.

2. Understand the possible complications caused by myopia through various channels.

Three. Investigation and data collation

Four. conclusion

(1) The main causes of myopia:

1 Watch TV too close;

Watching TV for too long;

3. The image density of TV is too deep;

4. Incorrect posture when writing homework;

⑤ Reading in the sun with too strong light;

6 reading in too weak light;

7. Sitting in front of the computer and TV for a long time;

8 unreasonable diet;

9 reading in the carriage

10 genetic factor

1 1 Not doing eye exercises seriously.

(2) Here I want to give you some suggestions:

1 Make a correct posture when reading. When reading or writing, you should keep your eyes one foot away from the book, your chest one punch away from the desk, and your hands one inch away from the pen tip.

Don't read while riding a bike or walking, and don't read while lying down. (3) Keep doing eye exercises twice a day.

Insist on doing eye exercises twice a day.

Try to surf the internet less or watch other radioactive things. Pay attention to the schedule and don't let your eyes be tired for a long time.

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. Eyes are the windows of the soul, so we must protect them!