Sunglasses - why do we wear them?

Sunglasses are a special kind of glasses that have been specially darkened to stop bright light from hurting your eyes. When you wear them, the world seems to become a little less bright, which can be a relief on very sunny days. They go all the way back to Roman times, and are especially popular today in the summer and on beaches.

However, shielding their eyes from light is not the only reason that people wear sunglasses. They can also sometimes look good in themselves as a fashion accessory, and people may also use them to hide their eyes from others when they are upset, or on drugs, or don