"Laughing king's eyes are too rare, the child stood next to ask who is?"
Sun through the window mullion to take the marbles, the moon moved flower shadow to pick up wood branches.
Because of the painting wall chafed nose, for the lock box with eyebrows.
There is a general smile, blowing the lamp burns the skin of the lips."
From this poem, we can see that myopia has existed in ancient times, and today we will talk about the evolution of eyeglass mart through ancient and modern times.
Stone - the first step in the evolution of the lens
As early as 2283 BC, the Chinese emperor observed the stars through a lens, and glasses were introduced from China to foreign countries.
Archaeological research found that the first lens is made of natural crystal, in 234 AD has the process requirements for grinding lens lenses, "stone" more and more types: crystal, quartz, topaz or amethyst, the material is scarce, expensive, ordinary people can not afford to wear.
Metal - The first appearance of frames
From 1974 to 1977, three pieces of light-gathering glass (with patina on the sides) were unearthed at Tomb No. 1 in Dongyuan Village, Anhui Province, which indicates that copper frames were already available as early as the 2nd century AD.
With the further improvement of technology, the real sense of glasses has been basically fixed.
Sun Yunqiu -- the emergence of outstanding technical talents
God said: outstanding people will appear, so Sun Yunqiu appeared. His optical instruments left a glorious page in the development of eyeglasses.
A prank - the birth of contact lenses
The inspiration came from one of his son's pranks. His little son knocked his glasses from the bridge of his nose to the ground, the little son picked up the broken lenses, stuck them in front of his eyes and shouted... And just like that, contact lenses were born!
At this point, whether it is frame glasses or contact lenses, it has brought great convenience to people's production and life.
Glasses are better with or without a nose holder
There are many different styles of glasses and more and more materials. That is, because there are many choices, it is easier to make people helpless and difficult to choose. There are many users who have been debating whether glasses have a nose holder or not.
The nasal pad includes a pedicle, a box and a leaf. The leaf is in direct contact with the nose and plays the role of supporting and stabilizing the frame. Some moulded plastic frames may not have a holder and a holder box, and the holder is connected to the mirror ring.
In fact, different materials and different styles in the design, the designer will judge whether the nose holder is needed according to the comfort and beauty of the glasses. General metal frames are equipped with nose brackets, and the nose brackets can be moved in order to adapt to various nose shapes. On the one hand, the metal frame with the nose bracket can prevent some people's skin from being allergic to metal, on the other hand, the metal looks stiff, business, and the nose bracket is more beautiful and comfortable. Most of the glasses are plate frame glasses, plate material is relatively light and not allergic, from the point of view of beauty and comfort, no nose bracket is more suitable.
In fact, there is no discomfort or advantages and disadvantages of nose pads and no nose pads, in fact, they are similar, the key is to look at personal preferences and comfort. In general, the nose bridge high point is suitable for choosing no nose bracket frame, the nose bridge flat people to avoid glasses slide affect the visual effect, more suitable for choosing a nose bracket frame.
