optical delusion

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English

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Noun

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optical delusion (plural optical delusions)

  1. (dated) A vision or image that is deceptive or misleading, such as an optical illusion or a trick of the light.
    • 1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887, →OCLC:
      I rubbed my eyes, thinking that I was the victim of some hallucination, or that the refraction from the intense light produced an optical delusion; and, as I did so, the flaming pillar slowly twisted and thundered off whithersoever it passes to in the bowels of the great earth, leaving Ayesha standing where it had been.