In 1964, a new art form called Optical Art or Op Art emerged, featuring geometric shapes and patterns designed to create visual illusions rather than convey specific meanings. Pioneered by artists like Bridget Riley, early Op Art used black and white patterns that later incorporated vibrant colors. This style was applied in various mediums including interior design, fashion, advertising, and album art and became very popular in the 1960s before declining in popularity later that decade.