Find a research report on myopia in elementary school students! Fast! Give 20 points

Monday to Thursday is 19:00, 19:30, 20:00 Friday to Sunday is 13:30 to 19:30 once in half an hour.

Also write the name of the unit (the unit is the school class) under the title

The same style has the environment and walkie-talkie comparison hgbj can not just ignore the change without shouting can not walkie-talkie female worker nostalgia albigo year plan hjhvhj environment is not and after the drama bvghvhvn

One. Formulation of the question.

Children in every family are treasures, to say the same, with the popularization of television, computers, the delicate eyes of the flowers of our motherland have been attacked, now, in our class, most of the students suffer from myopia, and some of the students' myopia is very serious, some students even lower eyesight, which may bring them a lot of inconvenience in their future life, study and work. In order to protect and prevent eyesight, I conducted a survey on the myopia of my classmates.

Two. Survey methodology.

1) Through the Internet, read some information about scientific eye use and eye health care, understand what myopia is and the causes of myopia.

2) Through the interview, we will understand the myopia of the students in the class and the development trend of poor eyesight in the past three years.

3) Through interviews, surveys, and interviews with parents, students with myopia can learn about their learning and living habits.

Three. Compilation of information on the status of the investigation.

1. Myopia is also known as short-sightedness, because this eye can only see near and not far. When the eye is at rest, the parallel light coming from infinity passes through the refractive system of the eye, and then converges in front of the retina to form a focal point, and forms an unclear image on the retina. Distance visual acuity is markedly reduced, but near vision is normal.

2 There are 39 students in this class, 8 of whom have no congenital genetic myopia and 8 who have acquired myopia, and the proportion of myopic students accounts for 2/3 of the classCompared with previous years, the myopia rate has a significant increasing trend.

3. Most students do not pay attention to eye hygiene and do not use their eyes scientifically. Writing too close to the book; Long-term use of the eyes without rest, causing visual fatigue; Watching TV for a long time, reading a book in an environment where the light is too strong or too dark, using it continuously for a long time, etc.

Four. Conclusion. 1. Myopia is caused by the curvature of the lens, and the image formed by distant light rays falls in front of the retina. As a result, it is difficult to see things in the distance. If you are nearsighted, you can wear concave lenses to correct it.

2. The formation of myopia is mainly caused by not paying attention to eye hygiene and long-term eye fatigue, such as incorrect reading posture, reading and writing at close range, not paying attention to rest, etc. High myopia may also be related to genetics.

3.For the sake of my classmates' eyesight, I looked up relevant books and found that myopia can be prevented: (1) Reading and writing posture should be correct, and the distance between eyes and books should be kept at one foot apart.

2) Do eye care exercises carefully and check your eyesight regularly. (3) Take a break after reading a book, watching TV or using the computer for one hour, or look into the distance for a while. (4) Insist on eye drops every night.

5) Eat more fruits and vegetables. In addition to the above 5 musts, you should also do the following three don'ts: (1) Do not read or write in dim light and direct sunlight.

2) Don't lie down and read. (3) Do not walk and read.