I usually wear sunglasses for fashion,any one who knows the benefit of wearing sunglasses?Or why should we wear sunglasses?

You know that the sun generates two types of ultraviolet radiation: UV-B rays (short-wavelength radiation) and UV-A rays (longer wavelength), which have higher energy and are more damaging. Both UV-A and UV-B rays are potentially harmful to the eyes.Sunglasses can offer protection from the harmful effects of damaging UV rays from the sun.