optical illusion
Trick of sight
An optical illusion is a visual phenomenon where what you perceive differs from physical reality.
The brain misinterprets visual information, making static images appear to move, equal lines seem different lengths, or colors shift depending on context.
That dress looked blue to me but gold to her—classic optical illusion.
The term extends to anything deceptively misleading: The candidate's lead was an optical illusion that vanished on election day.
Lingering visual impression
- anamorphosisDeliberately warped image
- moireRippled textile finish
- pareidoliaPerceiving patterns in randomness
- refractionWave bending between media
Atmospheric optical deception
- trickDeliberate deception
- sleight of handSkillful manual deception
- misdirectionIntentional focus manipulation
- camouflageConcealment through visual blending
disguise · trickery · magician · phantasm · conjuring · prestidigitation · hoax · gimmick
Art mimicking three dimensions
- EscherDutch impossible-geometry artist
- op artIllusion-based geometric abstraction
- forced perspectiveSize manipulation through positioning
- foreshorteningDepicting depth through size
street art · mural · hologram · kinetic art · stereogram · surrealism · installation · gallery
Organ of sight
- retinaLight-sensing tissue layer
- visionAbility to see
- binocularUsing paired eyes
- depth perceptionGauging object distance visually
blind spot · saccade · fovea · peripheral vision · figure-ground · visual cortex · ocular · contrast
Seat of cognition
- misperceptionIncorrect interpretation of reality
- interpretationAssigned meaning
- expectationBelief about future outcomes
- pattern recognitionIdentifying regularities in inputs
cognitive bias · bistable · visual processing · attention · awareness
afterimage
Lingering visual impression
- anamorphosisDeliberately warped image
- moireRippled textile finish
- pareidoliaPerceiving patterns in randomness
refraction · scintillation · gestalt · ambiguity · distortion
mirage
Atmospheric optical deception
- trickDeliberate deception
- sleight of handSkillful manual deception
- misdirectionIntentional focus manipulation
camouflage · disguise · trickery · magician · phantasm · conjuring · prestidigitation · hoax · gimmick · special effects
trompe-l'oeil
Art mimicking three dimensions
- EscherDutch impossible-geometry artist
- op artIllusion-based geometric abstraction
- forced perspectiveSize manipulation through positioning
foreshortening · street art · mural · hologram · kinetic art · stereogram · surrealism · installation · gallery · canvas
eye
Organ of sight
depth perception · blind spot · saccade · fovea · peripheral vision · figure-ground · visual cortex · ocular · contrast · luminance
brain
Seat of cognition
- misperceptionIncorrect interpretation of reality
- interpretationAssigned meaning
- expectationBelief about future outcomes
pattern recognition · cognitive bias · bistable · visual processing · attention · awareness
- optical illusionstrompe l'oeil, impossible stairs, duck-rabbit, afterimages, impossible triangle
- mind tricksmind games, magic tricks, riddles, puzzles, brainteaser
- UFO explanationsUFO, weather balloon, Venus, swamp gas, ball lightning
- funhousehall of mirrors, mirror maze, distorting mirrors, barrel roll, spinning disc
- illusionsmirage, hallucination, afterimage, double vision, ghost image
- Reality vs Illusionmirage, hallucination, dream, fantasy, truth
optical illusionreality
What actually exists
objective reality · objective view · realistic depiction · what you see is what you get · 20/20 vision
optical illusiontruth
Accordance with reality
genuine article · the real thing · what you see is what you get · unvarnished truth · transparency
illusion, delusion, illusory, allusion, optical, optic, optics, optician, illusive