Lens and eyewear

A lens comprises: a lens body; and an internal electrode installed on the lens body, at least a portion of the internal electrode is exposed at an outer edge portion of the lens body, and in the outer edge portion of the lens body, the shape of a first region including an exposed portion where the internal electrode is exposed is different from the shape of a second region not including the exposed portion. As a result, provided is a lens that can be easily installed on a frame. 将镜片构成为，包括：镜片主体；以及内部电极，安装于镜片主体，且至少一部分在镜片主体的外缘部露出，在镜片主体的外缘部中，包含内部电极露出的露出部的第一区域的形状、与不包含露出部的第二区域的形状不同。由此，提供能够容易地安装于镜框的镜片。