An optical illusion (also called a visual 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 (brightness, colour, size, position, tilt, movement), and cognitive illusions, the result of unconscious inferences.
How many legs?
Find the black dot
Two words that describe this image
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my mind has taken a turn – it’s turned off
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Twitter: technicallyeasy
The lego staircases one is pretty cool. I have seen some of these before, but they are always interesting to look at.
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The Lego staircase set is cool!
Wow! my eyes are crossed now…lol, so cool though, I love the first one.
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I love optical illusions, it’s amazing how the human brain can be fooled 
Oh dear I’ve gone cross-eyed
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The staircase and elephant is cool. I almost don’t know how many feet does the elephant have in the picture! it is amazing!
Based on my own opinion, those cool optical illusions that buggle the mind are really interesting. I think that many people also like those tricky optical illusions. I think that it would really let you think hard.
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