Red, Green, and Blue Twisted Curves, 1979. The “spectator who looks at my work is part of the work itself,” Riley has said. Collection of the artist. ©Bridget ...

Bridget Riley, one of Britain’s most revered living artists, once again proved her enduring power in the art market as her 1985 painting Myrrh achieved a sensational £1,802,900 ($2,362,000) at Bonhams ...

Bridget Riley has produced some of the most visually arresting art of the past century ... brain but because of miniscule involuntary eye movements called microaccades. Riley’s work invites ...

Op Art, also known as optical art ... the images and this creates feelings that the work itself is moving. Bridget Riley's Uneasy Centre features black and white circles painted with lines ...

Op Art, also known as optical art ... Image caption, Uneasy Centre, Bridget Riley, 1963, screenprint, Peter Horree / Alamy Stock Photo Bridget Riley's Uneasy Centre features black and white ...