OPART

Abstract visual style for the 1960s, giving the illusion of movement (2,3)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 16,522 — 2023-04-19 23:00:29
  11A: Work by Bridget Riley, for instance (2,3)
• Quick crossword No 15,637 — 2020-06-18 23:00:01
  1D: Abstract visual style for the 1960s, giving the illusion of movement (2,3)