Throughout her career, Helen Pashgian has made sculpture out of various plastics and resins. She is one of a group of Southern California​ artists—​known as Light and Space artists—who have created works investigating perceptual phenomena: how we come to understand form, volume, presence and absence through light, seen directly through other materials, reflected, or refracted. Pashgian used frosted sheet acrylic (often known by the brand name Plexiglas) to create Untitled (Wall Sculpture). One senses an ocean-like depth in this work at the same time that one’s vision feels mysteriously occluded; the internal forms likewise are simultaneously legible yet enigmatic.