Sunglasses or goggles are the glasses containing darkened or colored lenses which prevent bright light or harmful ultra-violet rays from reaching the eyes.
One of the first sunglasses can be dated back to 12th century when flat panes were used to protect the eyes from glare in China. Experiments with tinted lenses began in the mid 18th century by James Ayscough.
However, these sunglasses were meant to correct vision and not to protect eyes. In modern days, Sam Foster introduced inexpensive sunglasses in the United States in 1929.
Though lenses of the sunglasses are available in many colors, make sure you choose the color which will not distort your vision. Generally, green, grey, yellow or brown colors are advisable as they would reduce color distortion in your vision which could prove quite fatal especially for those driving vehicles. Of them, grey is the best choice as they would not distort colors. Brown and green lenses minimally distort your vision.
As far as possible, try to avoid red, orange, blue or purple lenses as they lead to color distortion.You will either get glass or plastic lenses in the sunglasses. While glass lenses provide best visual clarity and are scratch-proof, they are heavier as compared to the plastic ones. Another disadvantage of glass lenses is that it can break easily. On the other hand, plastic lenses do not break easily but they are very prone to scratches.
Frames of a sunglass come in plastic, metal or nylon. Nylon frames which are very flexible and light in weight are generally worn by sportspersons while playing. On the other hand, metal or even plastic frames are very rigid.
There are three types of sunglasses frames – full frame, half frame and frameless. In full frame glasses, as the name suggests, frame runs around the lenses, whereas in half frame, sunglasses frames is attached to the top portion of the lenses and the lower half does not have any frame over it. In frameless glasses, the ear pieces are directly attached to the lenses. Frameless glasses, which are quite a rage these days, require high maintenance and are very prone to the scratches as compared to full frames glasses or half frame glasses.
Chooses the kind of sunglasses you like, any glass, any frame but make sure that the sunglasses you wear suit your face and personality and you are sure to make a style statement.