Fashionable Eyewear Style

Eyeglasses are a thin lens for the eyes to normalize and sharpen the eyesight (some are suspect and some are not) Now in addition to being a visual aid, glasses have also become a complementary style as well as a special tool to enjoy entertainment such as special glasses three-dimensional.

Types of Glasses:

1. Sunglasses
Sunglasses are glasses that have dark lenses (usually black). The purpose of making these glasses is to protect the eyes from light glare to ultraviolet light (UV). Sunglasses are used in addition to protecting the eyes from light, also often used for stylistic reasons. Sunglasses are also often used by the blind for aesthetic reasons so that people can not see their eyes.

These sunglasses were first used in the 12th century or perhaps earlier in China. Similar to sunglasses, the Inuit also use snow goggles to protect their eyes, although these kinds of glasses can not correct the abnormalities experienced by the eye.
3D Glasses
3D Glasses

2. 3D glasses are glasses used to watch three-dimensional films where 3D glasses is a vital tool to get three-dimensional sensation. These glasses have one red lens and one blue or cyan lens.
Reading glasses

3. Reading glasses are the glasses used to help the eye achieve normal vision when reading. This type of glasses become a necessity for people with eye disabilities.

Examples of eye disorders that can be corrected with reading glasses are

1. Miopi or commonly called nearsightedness. This is an eye disorder in which the eye is unable to see distant objects, but can see a close object due to a person's lens disorder that has lost its elasticity. As a result, light does not exactly fall on the retina but fall in front of the retina. This eye disorder can be overcome with the help of concord lens lens or also commonly known as minus glasses.
Reading glasses

2. Hypermetrophy or commonly also called farsightedness. This is an eye disorder in which the eye is unable to see a nearby object, but can see a distant object due to the lens of the person losing its elasticity so that the light does not fall directly on the retina but falls behind the retina. This eye disorder can be overcome with the help of a convex lens or often also called plus glasses.

3. Presbiopi or often also called nearsightedness because usually this eye disorder experienced by people who are aged over 40 years. This type of disorder makes the patient unable to see clearly objects that are at a distance and objects that are at close range. To overcome these eye disorders, are required to wear bifocal glasses.

4. Astigmatism or familiar also called the term cylinder, is a disorder in the eye that makes the patient unable to distinguish the straight line. Eye disorders are caused by the uneven surface of the eye so that when light is reflected through the uneven surface, it will send an uneven light also on the retina of the eye. To solve this problem, can use cylinder lens.
Nancy Reagan with her oversized eyeglasses. Glasses not only as a visual aid, but also as accessories
Glasses Now

5. Nowadays, glasses commonly use plastic lenses. This is due to consideration to protect the eyes of the user because the plastic lens is not easily broken compared with glass lenses. In addition, with the development of increasingly sophisticated technology, plastic eyeglass lenses are cultivated so as not to break into pieces so as not to harm the eyes of users.

The use of glasses today is no longer limited as a visual aid. Currently, glasses have become one of the fashion accessories that also grow rapidly. Not infrequently also glasses become a special style for someone.