An optical illusion tests your IQ: Only a Genius can find a hidden snail in a public park image in 15 seconds!  

Optical IQ Test Illusion: An optical illusion is a mind-bending, captivating, shape-shifting vision of objects, drawings, or people that challenges brain perception.   

You've witnessed physical, physiological, and cognitive optical illusions.  

Studies show that psychoanalysis uses optical illusions to illuminate perception.   

A typical human brain can perceive items or images differently from different angles.   

Some interesting illustrations include a monkey lurking in the zoo.  

This photo puzzle is for kids and adults. This illusion shows a large zoo with a monkey hiding.   

The illusion requires viewers to find the monkey in the photo.   

According to reports, barely 1% can spot the monkey in this photograph.   

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