An optical illusion is any illusion of sight, which leads us to mistakenly perceive reality. These may be a physiological or cognitive effects associated with excessive stimulation of the eyes or brain (brightness, color, motion, etc. as spell after seeing a powerful light), or cognitive, that involved our knowledge of the world. Cognitive illusions are commonly divided into ambiguous illusions, distorting illusions, illusions and paradoxical illusions dummy (hallucinations).
Fun application that shows you different optical illusions!
Let your friends and surprise yourself!