Definitions for optical illusion
This page provides all possible meanings and translations of the word optical illusion
Random House Webster's College Dictionary
Ref: See under illusion (def. 4). 4
Origin of optical illusion:
an optical phenomenon that results in a false or deceptive visual impression
An image that is visually deceptive or misleading.
An optical illusion is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a perception that does not tally with a physical measurement of the stimulus source. There are three main types: literal optical illusions that create images that are different from the objects that make them, physiological ones that are the effects on the eyes and brain of excessive stimulation of a specific type, and cognitive illusions, the result of unconscious inferences.
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"optical illusion." Definitions.net. STANDS4 LLC, 2013. Web. 7 Dec. 2013. <http://www.definitions.net/definition/optical illusion>.