Glasses tinted to protect the eyes from sunlight or glare
Sunglasses or sun glasses are a form of protective eyewear designed primarily to prevent bright Sun light and high-energy visible light from damaging or discomforting the eyes.
spectacles that are darkened or polarized to protect the eyes from the glare of the sun; "he was wearing a pair of mirrored shades"
(sunglass) a convex lens that focuses the rays of the sun; used to start a fire