Eyewear refers to various types of glasses and lenses designed to improve vision or protect the eyes. Common forms of eyewear include eyeglasses, sunglasses, and contact lenses. Eyeglasses typically consist of a frame that holds lenses, which can be prescribed to correct vision problems like nearsightedness or farsightedness. Sunglasses are a popular type of eyewear that protects the eyes from harmful ultraviolet (UV) rays and reduces glare from bright surfaces. They come in various styles and can also have prescription lenses. Contact lenses are another option, worn directly on the eye, providing a more natural field of vision without the bulk of frames.