Precedents for Op Art

From Susan Meller's and Joost Elffers encyclopedic book Textile Designs: Two Hundred Years of European and American Patterns Organized by Motif, Style, Color, Layout, and Period, pages 194 and 195:

"The distorted-looking images in these optical prints may seem to have been inspired by the paintings of twentieth century artists like Bridget Riley and Victor Vasereley, but all of the examples here, except for number 3, were produced decades before. Designs resembling modern Op Art actually predate the modern printing industry altogether, for they arise easily from the grid imposed by loom weaving.