Here are popular glass eyes for women’s trends 2011 2012, Glasses – also calledeyeglasses (formal), spectacles, or specs (informal) – are frames bearing lenses worn in front of the eyes, normally for vision correction or eye protection. Sunglasses allow better vision in bright daylight, and may protect against damage from high levels of ultraviolet light. Other types of glasses may be used for viewing visual information (such as stereoscopy) or simply just for aesthetic or fashion values. Modern glasses are typically supported by pads on the bridge of the nose and by temple arms (sides) placed over the ears. CR-39 lenses are the most common plastic lenses due to their low weight, high scratch resistance, low dispersion, and low transparency to ultraviolet and infrared radiation.