In modern times, we must work under great pressure which can cause intense tension and fatigue in our eyes. And most of us have to suffer from various kinds of eye problems just for this reason. Wearing glasses is one of the best and safest ways to deal with such problems.
How to choose good and suitable glasses? This is an introduction to glasses and you might get the information you need before choosing it. If you are looking for New York eyeglass frames then you can have a peek here http://www.spectaculareyewear.net.
History – More than 7 centuries have passed since the first glasses appeared. It changed very slowly at the beginning of several centuries. But some achievements were obtained in models, frames, and lenses.
However, major changes have occurred since the 20th century. For example, plastic, polymers, and many other smart materials can be used to make frames, lenses. In particular, in the new century, the meaning of glasses was expanded.
Repair – Judging from the standards before the 20th century, glasses are made of three parts, namely, the frame, lens, and nose pads. However, in modern times, glasses may not have all those features, such as rimless glasses.
The original function of the glasses is vision correction. And this is also a good selling point for glasses. Many eye problems can be treated with glasses, including the most common, such as nearsightedness, farsightedness, etc. Special glasses are also designed to deal with some eye problems that are difficult to cure. Bifocal and trifocal are very typical examples.