Julian Stanczak, a Polish-born American abstract painter who rose to fame as a leading figure of the popular Op Art movement but slipped into obscurity when its reputation flagged, died on March 25 at his home in Seven Hills, Ohio, a Cleveland suburb. He was 88.

His death was confirmed by his New York gallery, Mitchell-Innes & Nash. His family said that he had died after a short illness.

Mr. Stanczak was a firmly optimistic artist, despite injuries in a Soviet labor camp during World War II that rendered his dominant right arm useless. He helped name the art movement to which he was linked in 1964 when his New York debut at the Martha Jackson Gallery was titled “Julian Stanczak: Optical Paintings.”

Reviewing that exhibition in Arts magazine, Donald Judd, then an emerging Minimalist sculptor, coined the phrase Op Art in a sardonic closing sentence, linking the upsurge in perceptual abstraction, as it was sometimes called, to the Museum of Modern Art’s plans to survey the trend.