Bridget Riley (1931) is a well-known British artist celebrated since the mid-1960s for her distinctive, optically vibrant paintings, called “Op Art.” She explores optical phenomena and juxtaposes color either by using a chromatic technique of identifiable hues or by selecting achromatic colors (black, white or gray). In doing so, her work appears to flicker, pulsate and move, encouraging the viewer’s visual tension. Riley’s vibrant optical pattern paintings, which she painted in the 1960s, were hugely popular and become a hallmark of the period.

"The eye can travel over the surface in a way parallel to the way it moves over nature. It should feel caressed and soothed, experience frictions and ruptures, glide and drift. One moment, there will be nothing to look at and the next second the canvas seems to refill, to be crowded with visual events." (Bridget Riley)