What does Op-art stand for?

Op art, short for "optical art," is a style of visual art that uses optical illusions to create dynamic and often disorienting effects. It focuses on the perception of movement and depth through the arrangement of shapes, colors, and patterns. Artists in this movement, such as Bridget Riley and Victor Vasarely, often employ geometric forms to engage viewers' visual senses and challenge their perception. The movement gained prominence in the 1960s and continues to influence contemporary art and design.