Write a composition with myopia

1. essays on preventing myopia Now many students are called "small four eyes" by others because those students wear glasses. Nowadays, teenagers' eyesight has plummeted, and more and more students wear glasses. Normal eyes can see near or far objects at a certain distance, and due to the corresponding change of lens convexity, the image of the object can be clearly projected on the retina. If the anterior-posterior diameter of the eyeball is too long, or the convex lens is too large, the light reflected by the distant object will fall in front of the retina after being refracted by the lens, so the distant object cannot be seen clearly. Such eyes are short-sighted.

If the anterior-posterior diameter of the eyeball is too short, or the elasticity and convexity of the lens are small, the light reflected by the near object will fall behind the retina after refraction by the lens, and the clear object cannot be seen. This kind of eye is hyperopia.

According to our physical knowledge, just like the principle of pinhole imaging, after the eyeball is deformed, the image of the object will not be formed on the retina, but at the front or back end of the retina. Both myopia and hyperopia can be corrected by doctors' examination, optometry and wearing appropriate glasses. Myopia needs to wear a moderate concave lens (myopia glasses), and hyperopia needs to wear a moderate convex lens (reading glasses) for correction. In addition, myopia can also be divided into pseudomyopia, true myopia and mixed myopia. Pseudomyopia, when looking at distant objects, can also participate in some adjustment functions to restore vision. There are two reasons for myopia: one is congenital and the other is acquired. There are mainly genetic factors in nature, and environmental factors, social factors and eye habits are acquired. At present, most teenagers' myopia is caused by careless use of eye hygiene. At present, most teenagers are pseudomyopia because they are reading and writing too close to the book, or their posture is incorrect, or the light is not good. If you don't pay attention to eye hygiene, it will become true myopia. Therefore, protecting eyesight and preventing myopia are things that teenagers must do now. Otherwise, you will become nearsighted, wear glasses all day, and the first thing to do when you get up every morning is to look for glasses. You are also laughed at by other students and called "Little Four Eyes". That taste is not good! Now that living conditions are good, video games, computer games and cartoons will attract and even tempt teenagers, which will lead them to spend a lot of time and their eyesight will naturally decline. Watching TV screens and computer screens for a long time will reduce your eyesight. 1, we should pay attention to the following points to prevent myopia: 2. Insist on doing eye exercises; 3. Don't read in bumpy carriages, boats or places with poor light; 4. Don't read while lying down; 5, reading a book, watching TV, watching a computer screen for too long, you should take a proper rest, look into the distance or see green plants; 6. Check your eyesight regularly to see if it drops. People with myopia should wear glasses. 7. Pay attention to eye hygiene. Eyes are the windows of the soul, so we must protect our eyes, protect our eyesight and prevent myopia. Let yourself have bright eyes.

2. How to write 400 words in myopia composition? First, ask questions.

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, and the prevalence rate is extremely high. 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!

3. How can a rabbit write a composition when he is lying reading and his eyes are nearsighted? Rabbit is a good student who loves reading. Every day when he comes home from school, he always carries a lot of books and reads them endlessly.

One day, the old goat saw the little rabbit lying reading. The old goat said to the little rabbit, "Little rabbit, it is wrong for you to study like this." Reading while lying down will make you nearsighted. Get up quickly. " Little Nutbrown hare shook his head and said, "I often read like this. If I am tired of sitting and watching, I will lie down and watch for a while. It's okay. " The little rabbit didn't listen to the old goat, so the old goat had to leave.

Just then, the deer came over and said, "Little Rabbit, your reading posture is wrong. Keep a certain distance between books and eyes. If the book is too close to the eyes, it will be nearsighted. " The rabbit said to the deer, "Thank you for your concern. I have been reading books like this for so many years, and my eyes are not nearsighted at all. " When the deer saw the rabbit, it didn't listen to his advice and there was nothing it could do. Path shook his head and walked away.

A few days later, the little rabbit felt that his eyes were blurred when reading. He went to the hospital for examination. The doctor told the rabbit that his eyes were highly nearsighted and he cried sadly. If he had listened to the deer and goat, he wouldn't be nearsighted, so the rabbit had to wear glasses to read.

Through this incident, I understand that it is not good for me to listen to others with an open mind and not turn a deaf ear to others' words.

4. nearsighted composition I walked out of the optical shop and couldn't accept the fact that I was nearsighted. When you wear new glasses, the world in front of you becomes clearer and seems brighter. Taking off my glasses, although nothing has changed, my eyes seem to be covered with a layer of gray, and roads, camphor trees, pedestrians ... everything seems unreal. Hey! My mood has become gloomy, because wearing glasses will greatly reduce my image. Ah, ah, ah But who can blame when I think that I spent the whole summer on the internet and planted in front of the TV? I regret it! Hey! Suddenly I remembered a super classic sentence and quoted it as saying: "The greatest pain in the world is nothing more than this. If God gives me another chance, I will definitely say to my eyes,' I will protect you! "

Story number 1

At this point, I can only accept the truth painfully.

A few days before I used my glasses, something suddenly appeared on my nose, and I couldn't adapt. I can't help fiddling with my glasses in class, and I don't know where to adjust them.

In a math class, I fiddle with my glasses from time to time. The result was stared at by the math teacher. The teacher gave me a stern look and motioned me to listen carefully. I silently lowered my head and began to whisper, "It's not my fault, it's all my glasses."

"Hu Qingyi! You stand up for me! "

Oh, no, the teacher must have whispered that she found out just now. What should I do? What should I do? The teacher has been very strict with me, and I was caught this time! My brilliant life will be ruined by this little glasses! !

"Hu Qingyi, what were you talking about? Why don't you listen carefully? Tell me, how to solve this problem? "

"Well, angle A is equal to angle B, and AB…… ... is equal to ..." Shit, Hu Qingyi! Cheer up and don't be incoherent! "AB equals AC…… ..."

I cried. It turned out that the problem was not as simple as I thought.

I was speechless for a moment.

"You sit down! Listen carefully! " Oh!

So I sat in front of the public, my face flushed.

I began to take out the audition cloth and clean my glasses. I tried to clean them. Rub hard.

At this time, something unexpected happened. I wiped the lens off the frame and it's about to break! ! At this critical moment, I thundered off the bench and made a quick squat catch!

"What inferior glasses!" I can't believe I yelled!

"Hu Qingyi, what are you doing! How dare you yell at the whole class! Punish you for writing a 3000-word review! " The teacher's face turned into pig liver color.

Oh, my God! God and God! Help me!

It's all glass!

Story 2

Because of the last incident, my glasses were sent to be repaired, so I don't need to wear glasses to class in recent days. To this end, I would like to sincerely sigh: it's good not to wear glasses!

There will be problems without glasses.

Another math class. The teacher talked happily on the platform. Because I didn't wear glasses and couldn't read the words on the blackboard clearly, I met Duke Zhou on my desk.

I was awakened in a daze, and then I heard the voice of my deskmate: "The teacher asked you to answer the question."

"Oh … ah" I immediately stood up and looked at the teacher in horror.

It is estimated that the teacher should take care of his own image, or immediately softened his face and asked me seriously: "What method is used to solve this problem?"

"Well, well. ..... There are many termites crawling on the blackboard. " My voice is very small. "What did you say?" "Oh, teacher, I didn't say anything. I can't solve this problem. "

I thought the teacher would let me live, but at this moment, a boy who owed me a flat suddenly shouted

"Teacher," she said, "there are many termites crawling on the blackboard!" "At the moment, the whole class laughed to death! Ah, I'm ashamed!

"What? What termites? If you don't listen carefully in class, you will be fined 5000 words for review again! "

No way!

Hmm? Where is that boy? I am going to fucking kill him! !

End of movement

My fate after wearing glasses is really sad. Although this kind of similar thing may not happen to everyone, you should protect your eyes and take me as a warning!

5. myopia glasses find a friend to write a composition. One day, myopia glasses don't want to sleep in a small room. He had to go out of the room to find a friend.

First, he came to Xiaohong's house. He saw Xiaohong sitting squarely at the table, and his nearsighted glasses didn't want to let Xiaohong, a friend with watery eyes, go.

I saw Xiaohong's head slowly lowered, and his nearsighted glasses thought it was an opportunity. He just wanted to introduce himself to his "new friend", but Xiaohong began to do eye exercises. Myopic glasses thought: Hum, I am not happy to be friends with such people! After thinking about it, he went to other places to find his friends.

Then, he came to Lan Lan's home. There is a poster on the wall of Lan Lan's home, which reads: According to the survey, the incidence of myopia among teenagers in China has been increasing year by year in recent years, with primary school students reaching 20%-30% and middle school students reaching 50%-60%. High myopia may cause a series of diseases, even threaten vision and lead to blindness ... After reading myopia glasses, he said angrily, "I can't believe I can't find it." It turned out that this poster was written by Lan Lan to remind herself to protect her eyes.

Myopia glasses go, go! He came to Xiaojun's house again. Xiaojun is reading a book, ha! Ha! Eyes and books will be in close contact soon, and nearsighted glasses and Xiaojun's eyes have become inseparable friends. Soon, Xiaojun put on myopia glasses.

Nose and ears disagree and run away from home every day. One day, they had a face-to-face meeting.

The nose spoke first: "eyes, what kind of friend are you?" You bully me every day, and you look condescending. Not to mention, now you put these broken glasses on me, and my "beautiful girl" is black and blue.

You have the courage to come down and fight. "I cried with my nose," Yes, you are the onion. If you put on your eyes, I will be very painful. Be careful that I accuse you of child abuse. "

My ears are short of breath. The eyes said to the nearsighted glasses, "Leave me, I don't want you as a friend!" " ""Hum, this how line? I swear I will always be with you! If you want to leave me, forget it! " "ha! Ha! " Myopia glasses pointed with a smile.

Students, you should be careful. If nearsighted glasses find you, you will suffer.

6. Short-sighted little monkey composition Little monkey doesn't like studying and doing homework.

One day, the little monkey came home and said, "It's really annoying. I have homework every day, which is really tiring. " "But the little monkey was afraid of being criticized by the teacher, so he had to take out his homework and scribble on the table. The handwriting is crooked, like a crawling caterpillar.

Mother monkey came back and saw the little monkey lying on the table doing his homework. She said, "son, sit up straight when writing, or your eyes will be nearsighted." Hearing this, the little monkey barely straightened up and frowned and said, "Oh, I'm so tired. I am tired of doing my homework. Isn't it more tiring to write straight? As soon as the mother monkey turned around, the little monkey fell down again.

After a while, the little monkey couldn't see the words written by the teacher on the blackboard clearly, and his eyes were blurred. The little monkey told his mother that her mother took the little monkey to the hospital to check his eyesight.

After checking your eyesight, the doctor said, "Your eyes are too close to the book when you usually do your homework, so your eyes are nearsighted.". Starting today, you should achieve the trinity of reading and homework, and read books. Write in the right posture, with your eyes one foot away from the book, your writing one inch away from the pen tip, and your chest one punch away from the table. Read for about an hour continuously, take a break or look far away for a while.

Doing these three things will improve your eyesight. "From then on, the little monkey listened to the doctor and never did his homework on his stomach again. He did eye exercises seriously every day, and his eyes were no longer blurred.

7. Composition on Protecting Vision (more than 400 words) Speaking of vision, there are many nearsighted students in our class.

It can be said that it accounts for about 40% of the class. Many students have poor eyesight and myopia because of some bad habits.

For example, I like reading while lying down, doing my homework with incorrect posture and sitting in front of the computer for a long time. These bad habits are the main reasons for our pupils' myopia.

Some students in our class are mostly nearsighted because of these bad habits. We should form good habits.

For example, when reading a book, 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.

Try to surf the internet less or watch other radioactive things. Pay attention to arrange the muscle helium crown to send the rhinoceros helium basket to avoid eye fatigue for a long time.

If your eyesight drops, your eyes will often be dry and tired, which will not only affect your study but also bring a lot of inconvenience to your life. Just like the students in our class, parents don't allow them to wear glasses after myopia, because it will make them more and more nearsighted.

But if you don't wear glasses, the teacher can't read the words written on the blackboard clearly in class. Academic performance has also declined.

Therefore, protecting your eyesight is a very important thing! Everyone must take good care of their eyes and don't make them too tired. It is best to do eye exercises for ten minutes every day. Be sure to get rid of those bad habits and protect your eyes from today.

Because it is very important to protect your eyesight.

8. Investigation report on 300 words of myopia in primary school students.

First of all, this question:

Many students in our class have put on glasses one after another. How many people are nearsighted? Why are they nearsighted again? I made a survey with other students.

Two. Investigation method:

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

2. Investigate and ask classmates how they are nearsighted.

Three. Investigation and data collation:

The specific contents of all aspects involved in information channels

The causes of book myopia are too close to the eyes, too long use of eyes, too strong or too weak lighting, reading while driving or walking, and incorrect posture. ...

At present, the incidence of myopia in China is 33%, and the number of myopia in China has reached nearly 400 million, which is 22% 1.5 times of the world average. China is one of the countries with the highest incidence of myopia in the world.

According to the degree of myopia, the harm of network myopia can be divided into four categories: mild, moderate, high and ultra-high myopia. Mild myopia is generally below 300 degrees. At this time, many myopia are pseudomyopia and mixed myopia. Parents should focus on preventing myopia from developing to a high level. Once moderate myopia is out of control, developing into high myopia (above 600 degrees) will bring a series of problems: inconvenience in daily life, restrictions on further studies, joining the army, eye diseases, and inheritance to the next generation. Once high myopia is not controlled, it will develop into ultra-high myopia (1000 degrees or more), and the retina may fall off at any time. ...

…… …… ……

Four. conclusion

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 do not pay enough attention to myopia.

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

9. Protect your eyes. The eyes are the windows to the soul. We must protect our eyes.

If we have no eyes, we will lose the light, our eyes will be dark, we can't see the warm sunshine, and there will be no laughter from now on; How uncomfortable it is to walk without eyes and stumble!

So, how can we protect our eyes? I think it must be done: pay attention to eye hygiene at ordinary times and often do eye exercises; Pay attention to the time when watching TV. You can watch TV, but don't watch it for too long. Let our eyes have a rest. Pay attention to your posture when reading, don't get too close, keep a foot away, and don't lie in bed and watch; See more plants such as green grass and trees to relieve eye fatigue.

I have had such an experience, and now I will share it with you. In the second grade of primary school, I didn't have a good habit of using my eyes. Don't pay attention to your posture when reading your writing homework. I like reading and doing my homework on my stomach. My eyes are sore as soon as I finish my homework. After talking to my mother, my mother was afraid that I would become nearsighted, so she took me to Qianliming for an eye test. Test results: right eye 0.6, left eye 0.8. This result worried my mother, so she asked me to go to Qianliming for eye care. A month later, the right eye 1.0, the left eye 1.2, the vision was obviously much better than before. Why is this happening? I think, on the one hand, it is because I have done eye care in Qianliming; On the other hand, I watch TV at home for a while. Usually, I look at green plants and pay attention to my posture when I read my writing homework, so my eyes are getting better.

My experience tells me that we must protect our eyes, which is an indispensable wealth for us. Preventing myopia can make us see the beautiful world more clearly!