Perceptual illusion in which an artificial blind spot is filled in by a twinkling background.
Checker shadow illusion
Perceptual illusion demonstrating that the visual system uses context as well as physical luminance to determine the lightness or darkness of an object.
Fantascope
Redirected to phenakistoscope.
Phantasmascope
Redirected to phenakistoscope.
Phenakistoscope
Optical toy producing the illusion of moving images, popular during the Victorian era.
Troxler Effect
Perceptual illusion in which an image in peripheral vision disappears.