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OPTICAL ILLUSIONS Norris. An optical illusion is any illusion that deceives the human visual system into perceiving something that is not present or incorrectly perceiving what is present. Which horizontal line is longest?. Who do you see?. END.
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OPTICAL ILLUSIONS • Norris
An optical illusion is any illusion that deceives the human visual system into perceiving something that is not present or incorrectly perceiving what is present.