Sunglasses or sun glasses are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. More and more people wear it as a piece of accessory so sunglasses are designed more and more fashionable.
There are many occasions you can wear the sunglasses such as outdoors, driving , traveling ,etc.. Even when you have dark eye, you can wear it for covering.