
op art short for optical art is a style of visual art that uses optical art.
op art work are abstract, with many better known pieces created in black and white. Typically, they give the viewer the impression of movement, hidden images, flashing and vibrating patterns.
The movements most top figures were Bridget Riley and Victor Vasarely who used patterns and colours in their work to achieve a disorientating effect on the viewers.
Bridget Riley:
http://www.op-art.co.uk/bridget-riley/

Victor Vasarely:
http://www.op-art.co.uk/victor-vasarely/

Sculptor artists Eric Olsen and Francisco Sobrino uses layers to different coloured Perspex to create a similar illusion of distortion. The artists used established ideas on perceptive psychology but needed to use maximum precision to gain the results they intended.