Humans have been born with American flag Merry Trumpmas make Christmas great again sweater brilliant intelligence compared to other animals. Therefore, they have created many things to serve their lives. One of the inventions with high applicability of the people is the daily necessities. Including eyeglasses. The first glasses were born in Italy in 1920. The most primitive glasses consisted of two glasses connected by two wires and then pressed on the bridge of the nose. In 1930, to make wearing glasses easier, an optician in London created two frames. There are many different types of glass, but their general structure is the same. Eyeglasses consist of two main parts: lenses (glasses) and frames. Lenses made from synthetic resin or light refractive glass. Lenses against UV rays, ultraviolet rays of sunlight. Lenses with a circle or square sized to fit the frame.
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Usually, before choosing lenses American flag Merry Trumpmas make Christmas great again sweater, buyers will choose frames first. Eyeglass frames account for 80% of the beauty of glasses. Eyeglass frames are the parts that support the lenses and frame each lens. Usually, common, normal, frames are made of durable, lightweight plastic, come in many colors or can be made of metal. Metal frames are stronger and stronger than plastic frames, but because they are heavier and more expensive, metal frames are less popular. Today there are also frames that are made of lightweight, durable titanium but the price is quite high so it is not popular. In addition, the glass also has small parts, such as screws, screws to connect the parts together.