Abstract: Nowadays, with the increasing importance of cultural knowledge, there are more and more literati students with myopia. Even among urban workers and rural farmers, a few generations of people with myopia can be seen. However, in ancient China, there were few literati students with myopia, let alone ordinary people., Myopia is also called myopia, because this kind of eye can only see near, not far. When the eye is at rest, after the parallel light from infinite distance passes through the refraction of the refractive system of the eye, it gathers into a focus in front of the retina, and forms an unclear image on the retina. The far vision is significantly reduced, but the near vision is still normal. If you have the symptoms of myopia, you need to wear glasses to see things clearly and correct your eyesight., Now, as cultural knowledge becomes more and more important, there are more and more literati students with myopia. Even among urban workers and rural farmers, a few generations of people with myopia can be seen. However, in ancient China, there were few literati students with myopia, let alone ordinary people., Some people have summed up six reasons for this phenomenon: first, in ancient times, most people didn’t know how to read, and not many people could afford to read books. After all, there were few scholarly families. Only people with good family conditions or status could afford to read books. Even when reading, there was little time spent on reading, and there were very few readers with hanging beams and pricking stocks, This determines that there is no environment for myopia in ancient times, and the risk and probability of myopia are very low., 2. The ancients used a long brush to write. Their eyes were far away from the characters, and the characters they wrote were relatively large and small, which objectively played a preventive role., III. The ancients read private schools. Without the current blackboard, they would not have difficulty reading the blackboard, so they didn’t have to think of any way to get close. In addition, the ancient natural science was underdeveloped. At that time, students read very few books. For example, there were no foreign languages, physics, chemistry, etc. mathematics was only simple operations such as addition, subtraction, multiplication and division. It was mainly four books and five classics. A Book of the Analects had to be read for several years. Without a book, they would not be nearsighted., IV. the ancients had a slow pace of life, and the traffic was mainly horse riding and walking. There was no need to worry about traffic safety, so the harm of getting close was small., V. the ancients didn’t have glasses. Although they seem unfavorable, they can objectively prevent the deepening of myopia, so the harm of myopia is very small.,
myopia is also called myopia, because this kind of eye can only see near, not far. When the eye is at rest, after the parallel light from infinite distance passes through the refraction of the refractive system of the eye, it gathers into a focus in front of the retina, and forms an unclear image on the retina. The far vision is significantly reduced, but the near vision is still normal. If you have the symptoms of myopia, you need to wear glasses to see things clearly and correct your eyesight.
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are becoming more and more important with cultural knowledge. There are more and more literati students with myopia. Even among urban workers and rural farmers, a few generations of people with myopia can be seen. However, in ancient China, there were few literati students with myopia, let alone ordinary people.
for this phenomenon, some people summed up six reasons:
first, in ancient times, most people did not read, and not many people could afford to read books. After all, there were few scholarly families. Only people with good family conditions or status could afford to read books, that is, reading, and there was little time spent on reading, and that kind of head hanging beam There are few scholars who prick stocks, which determines that there is no environment to form myopia in ancient times, and the risk and probability of myopia are very low.
II. The ancients used a long brush to write. Their eyes were far away from the words, and the words they wrote were relatively large and small, which objectively played a preventive role.
III. The ancients read private schools. Without the current blackboard, they would not have difficulty in reading the blackboard, so they didn’t have to think of any way to get close. In addition, the ancient natural science was underdeveloped. At that time, students read very few books. For example, there were no foreign languages, physics, chemistry, etc. mathematics was only simple operations such as addition, subtraction, multiplication and division. It was mainly four books and five classics. A Book of the Analects had to be read for several years. Without a book, they would not be nearsighted.
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IV. the ancients had a slow pace of life, and the traffic was mainly horse riding and walking. There was no need to worry about traffic safety, so the harm of getting close was small.
v. the ancients did not have glasses. Although they seemed unfavorable, they could objectively prevent the deepening of myopia, so the harm of myopia was very small.
6. In addition, the ancients had the effect of preventing myopia when walking, riding and seeing far without glasses. Therefore, the ancients had very little myopia and little harm. Compared with other diseases, it was nothing.
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of course, there were few myopia among ancient literati, but they were not absent. So, what did the ancients do if they had the symptoms of myopia?
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needless to say, the ancients still had a certain number of myopia, which can also be seen from some historical materials and jokes. In the Ming Dynasty, someone wrote a limerick poem mocking myopia. The poem said: “Xiao Jun’s eyes are too strange. He stood next to him and asked who is. The sun penetrates the window lattice, takes marbles, and the moon moves the shadow of flowers to pick up firewood branches. He scratched his nose by looking at the painting wall and clamped his eyebrows for locking the bookcase. In addition, he blows the lamp to burn his mouth and lip.” A sixty-four word doggerel vividly portrays the image of myopia who has lived a life in clouds and mountains. It is said that the myopic with a name is Zhang bangchang, the traitor in the complete biography of Shuoyue. Although Zhang bangchang’s official position is so high, there is no way to cure his myopia.
it seems that we can only rely on glasses to solve the problem of myopia. However, glasses were invented late and rarely used, which has little impact on the whole. It was definitely a symbol of identity at that time. It was not introduced into China until the mid-15th century. The lens is made of crystal stone, quartz, topaz or Amethyst. The materials are scarce and expensive. Ordinary people can’t afford it. Therefore, the emperor gives it to the minister as a good thing. In the TV series Prime Minister Liu Luoguo, Prime Minister Liu Yong wears a pair of glasses, but unlike today’s two legs, which can be hung on two ears, he is tied to his chest with a chain. In the TV series “iron teeth and copper teeth Ji Xiaolan”, Emperor Qianlong and he often wear sunglasses to pretend to be cool, but the common peopleBut few wear glasses.
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in 1260 ad, Marco Polo once described the scene of Chinese old people reading small characters with glasses. It is said that ancient Chinese glasses were large oval shaped and embedded in a mirror frame made of tortoise shells. The copper glasses feet were stuck on the temples, or tied to the ears with a thin rope, or the glasses were directly fixed to the hat. Moreover, the cost of glasses at that time was not high, so they were regarded as a symbol of status. It is said that there is a record of a squire exchanging a pair of glasses for the price of a horse. It shows that glasses are very rare, do not play much role on the whole, and whether they are myopia is not certain.