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How the board's writings are blurred after taking notes on the last bench in the classroom. Characters are like the sinking ship just outside the eyesight. But the next people are still picking up the fine notes. It seems like the eyes do not work properly. The problem seems to be slow. Another incident is happening on the other hand. In the same class no one can see the writing of the distant board, but it can not see his book.
To correct this problem of eye, today's eyeglasses are inevitable for the eyes. How many people have been the savior that this glasses can not be counted. But for a long time these glasses were just for the use of elite class. To reach the general, there was a lot of diversion to leave.
Hundreds of years ago Roman emperors used glasses to watch gladiators from far away. Although there was no glasses of glass lens in frames during the Roman Emperor Nero, there was a fancy arrangement of distant objects. Emperor Nero would carry with him a beautifully polished Emerald piece. By looking inside him, things could easily be seen far away.
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It is not possible to say that Niro had himself discovered this issue. While watching Nero's advisor and famous philosopher Seneca Nero's gladiatorial fight, he suggested to use a smooth emerald piece to save his eyes from sunlight and to see the distance. It is not the end here, on the basis of information that a distant object can be seen very well through a narrow hole, the pyrucure Inuit or Eskimora used to cut elephant teeth and use it as glasses. Apart from watching the things far away, the eyes were protected from sunshine.
source Eskimo's glasses
The real use of glasses for reducing eye problems was first started in Italy. Between 1268 and 1300, one of the atchcoulders in Italy arranged for hanging over the nose with two halves. As a result, the eyeglasses are made of eyeglasses. Historians are not sure about who did this work. However, a person named Giordano da Pisa popularized this type of glasses.
The existence of glasses has been found even after analyzing the ancient paintings. Some of the works painted in the 1400s were found in which the priests read and write books after the glasses in their eyes. So historians believe that glasses were introduced in Europe by the priests of 1400.
source Glasses used in the priests
The use of concave lenses began in the beginning of the sixteenth century as a remedial remedy. Initially, the use of such concave lenses began to eradicate the problems of Pope Tenth Leo's eye. Later, gradually his commercialization started. However, these glasses were made to be used for a short time. Always have the glasses hanging in front of the eye.
A group of Spanish lenses manufacturers use ribbons in the lens to make useful glasses. This fittar is designed to keep the glasses attached to the ear. The use of such glasses has spread to different parts of the world by the hands of Italian and Spanish missionaries. This glasses reached China through missionaries. However, people of China introduced a small weight hanging system instead of sticking to the ears of the glasses.
source Glasses tied in fitta
British eyelidist Edward Scarlett brought some changes in the design of glasses in 1730. It is designed to curl the end of the glasses frame to keep the lens bound in the frame and keep it on the ear. However, there was still some problem with the design of the glasses. For example, this glasses could not be folded due to lack of glasses like the present time. After a long time the hinges were added to the glasses frame to solve this problem. In the absence of non-use, the convenience of placing glasses in a bag or pocket is introduced.
In 1780, Benjamin Franklin created a special type of glasses to solve his Presbyopia problem. The upper part of this glasses, known as biafocal glasses, is used to see distant objects, and the lower part is used to read nearby items or small text. Benjamin Franklin wrote in a letter to his friend George Howletty in 1784 about the feeling of innovation in this glasses,
"I'm very excited to be able to invent bi-directional glasses. As far as the object is visible, the closest thing is clearly seen. Through this, my eyes have become so effective that there was no such effect before. "
source Benjamin Franklin invented biophysical glasses
Another important section in the history of glasses evolution was the discovery of the remedy for astigmatism. The glaring problems around the world are quite prominent. In 1825, English astrologer George Arie created a cylindrical concave lens. This results in the solution of the viscosity problem.
source English astronomer George Ayri
From 1880 to 1900, a special type of glasses hanging over the nose called Pince-nez became very popular. US President Theodore Roosevelt had a special choice. Starting from Roosevelt, many of Hollywood actresses would have loved to wear these glasses hanging in the nose.
source US President Theodore Roosevelt's Favorite Glasses
In 1873, when John Wesley was patenting celluloid, he probably did not know what would affect the celluloid glasses industry. Within a few years, the glasses made of celluloid frames come into the market. Various strange shapes of celluloid can be shaped, and the diversity of the glasses continues to grow. The sunglasses made in America in the 1930s were becoming popular. From the star of Hollywood to the trend of using sunglasses among young and middle-aged people, from the beginning of the 30s. The sunglasses can actually protect the eye from sunlight, so that it also contains several filters. This filter protects the eyes by trapping the sun's harmful ultraviolet rays.
source Sunglasses in the eyes of US women in the 40s
When handling the history of glasses, one thing certainly came forward that, for a long time the spectacles were only the objects of the nobility. The general people would wear glasses to correct eye problems, and the thing was very unrealistic. After the Second World War, a wide circulation of eyeglasses started to resolve eye problems. However, the plastic cost of the glasses would have been slightly higher because the plastic was not available at all.
In the forty-and-a-half decade of the last century, the framed glasses were in the frame of the ordinary, without the slightest constraint. Due to the availability of plastic in the sixties, the price of raw materials declined significantly. Along with the demands of glasses, the factories of glass making were rapidly modernized. By 2016, around the world of glass industry has created a billion dollar market. Italy has been ahead of many other countries in terms of commercialization of the glasses industry. Veteto region, known as Italy's glasses industrial town, still survives with the history of 700 years on Earth.
source The role of glasses in eye correction is very important
There are currently a number of effective alternatives to the glasses to improve the human eye. But the glasses have its place right there. In addition to the employment of millions of people, the employment of the people remains. How many people are getting a normal vision from a poor vision, this glasses are countless, it is countless. Undoubtedly glasses are one of the milestones of this modern civilization.
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