subject: The Invention Of Plastic Glasses Seems To Be Important [print this page] For most people, they must be more familiar with plastic glasses than others. According to some experts, they believe that plastic glasses were an extremely important invention in the 20th century. Most of eyeglasses lenses are made of plastic today and they will have a much wider market in the future. As people may suffer from the presbyopia above the age of forty, plastic reading glasses will be needed by them.
Before the invention of plastic glasses, the lenses of eyeglasses are made of glass. These glass lenses are much heavier and breakable, which is not safe for eyewear users. If some kids need to wear eyeglasses, it will have potential risk of wearing these glasses. Therefore, many scientists and experts begin to think it over and attempt to find better replaceable materials.
It was in 1962, Pittsburg Plate Glass Company first discovered that we can use plastic materials instead of glasses to made lenses. Since that time, more and more advanced materials are used to make plastic glasses. In modern time, plastic is also used in the eyeglasses frames. And they are designed fashionably and uniquely now. Take plastic reading glasses for an example. The stylish designs have made that many fashionable fans are willing to wear eyeglasses.
Plastic glasses have many advantages. They have the feature of lightweight, durability, safety and cheap prices. Moreover, they are easy to be tinted in various colors, thus can create different images. Eyeglasses play an indivisible role in modern time and plastic glasses are key player in the line of eyeglasses.
