Intricate technical drawings of vintage optometry equipment fill a black ground, with the central phoropter flanked by an array of lenses, frames, and diagnostic instruments rendered in fine white line work. The composition evokes a patent diagram, dense with mechanical detail and labeled with period typography that reads "OPTOMETRY" across the top. Printed to order on a soft, absorbent mat with a no-slip backing, ready underfoot the moment you step out. The kind of art you don't expect on a bathroom floor.