Optical illusion

An optical illusion is an illusion that deceives the human visual system into seeing something that is not present or incorrectly seeing what is present.

• 
• 

  mirrors

• 

  Penrose triangle

• 

  An optical illusion. Square A is exactly the same shade of grey as square B

• 

  Delboeuf illusion

• 

  Afterimage Mona Lisa

• 

  Art visuel

• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
• 
•