Bridget Riley is a British artist and considered to be one of the most prominent figures in the Op art movement, which emerged in the 1960s.
Riley's early works featured black and white geometric patterns, which later evolved to incorporate vibrant colours. One of her most famous paintings is "Movement in Squares," created in 1961, which features a grid of squares that seem to pulsate and shift as you look at them. Her work challenges the viewer's perception and explores the interaction between colour, shape, and visual perception.
Riley's work has had a significant influence on modern art, inspiring many artists and designers. Her ability to create dynamic visual experiences through abstract patterns has left a lasting legacy in the art world.