Sunglasses +
![Sunglasses](https://files.ozbargain.com.au/t/24/124.jpg?h=14bfdd01)
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. They can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are colored, polarized or darkened. In the early 20th century they were also known as sun cheaters ( cheaters being an American slang term for glasses).