Bridget Riley

Movement in Squares, made in 1961, helped establish Riley as a leading figure in Op art. Its warped grid of black and white squares creates the sensation of visual movement on a flat surface.

No. Riley became famous through early black-and-white works, but she later developed complex color paintings with stripes, curves, and repeated forms. Her use of color became especially important from the late 1960s onward.

Her paintings can create flicker, vibration, depth, or instability through precise pattern. The effect comes from the eye's response to repeated contrast rather than from actual movement.

Yes. Riley's work was included in The Responsive Eye, the 1965 Museum of Modern Art exhibition that helped popularize Op art in New York. The show made optical abstraction visible to a wider public.