Glasses can be categorized on the basis of their use. They may be prescribed by the doctor or they may be used as fashion item or may be used as sun glasses for protection against sun rays. Their style, material and manufacture depend on their mode of use. Very large variety of manufacturing material and styles is available. You can choose easily your own desired style and material for frame. One of the most used types of glasses is those prescribed by the doctor. People with week eye sight use magnified lenses to make their visual clear. These lenses are held in frame. Frame may be made up of metal or plastic. Lenses may be of plastic or glass. Different styles and colors of frames are available in the market. Purchasing new … Read entire article »