An optical device (often a toy) used to produce a form of anamorphosis or to view distorted figures

plural of anorthoscope

Of, pertaining to, or produced by an anorthoscope. / Of or pertaining to the optical illusion produced by one.

(rare, cognitive science) Perception, especially visual perception, that does not immediately follow from what is actually sensed, such as perception of an entire object only a part of which is seen at a time.

plural of anorthoscopic perception