Mental Process
optical illusion
op·ti·cal il·lu·sion
Subclass of:
Illusions
Definitions related to optical illusions:
  • The visual perception of an image that differs from the reality of the image.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • An illusion of vision usually affecting spatial relations.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.