Why we wear Glasses ?

Glasses also known as spectacles is wore by many for eye protection or vision correction.... There are different types of glasses that we can wear. Some of them are Corrective glasses, Safety Glasses, Sun glasses, 3D glasses, reading glasses and bifocal and tri focal lenses... Each of this type has its own unique features. The corrective glasses are used for the purpose of correcting myopia or hyperopia(Which we call as short sight or long sight). The safety glasses are mostly worn while driving in order to protect our eyes from the debris in the air. The sun glasses are worn to protect our eyes from ultra violet rays. Light polarization may be added to sun glasses... 3D Glasses are used for providing 3D view onto a 2D surface... You might have watched the Avatar Film... Special Glasses were provided for watching that film... These are the 3D glasses... Not only the glasses are of different types but also the frame that surrounds the lenses may be made of different materials such as the fiber, plastic, metal, stainless steel and they may be half rim frames or full rim frames.... The cost of glasses depends on the material used and also the quality... There a number of online stores where you can model the glasses you need...