An optical frame is a device that holds a pair of eyeglasses or sunglasses in place on a person's face. It consists of two eyepieces that hold the lenses, and a bridge that rests on the nose and keeps the eyepieces at the correct distance from each other. Optical frames can be made from a variety of materials, including plastic, metal, and titanium, and come in a wide range of styles and designs to suit different tastes and face shapes. They can be worn for vision correction, to protect the eyes from the sun or other environmental factors, or for fashion purposes.