Op art | Characteristics, Artists, & Facts
Op art, also called optical art, branch of mid-20th-century geometric abstract art that deals with optical illusion. Achieved through the systematic and precise manipulation of shapes and colours, the effects of Op art can be based either on perspective illusion or on chromatic tension; in painting, the dominant medium of Op art, the surface tension is usually maximized to the point at which an actual pulsation or flickering is perceived by the human eye. In its concern with utterly abstract formal relationships, Op art is indirectly related to such other 20th-century styles as Orphism, Const...
Source: britannica.com
