Elephant painted on hand in this illusionary image.
Optical illusion is also known as the visual illusion and in this the images that are visually perceived are very different from the actual images. The eye gathers the information that gets processed by the brain to give the idea or perception that does not match with the physical dimensions of the stimulus source in reality. The optical illusions have attracted the artists, scientists and the psychologists for years and many people have worked and submitted papers on it. The optical illusion is used in various forms. In exhibitions or art galleries these illusions are kept simply for display where the viewers can enjoy whereas large brands use the optical illusion to attract the viewers towards their brands and services. One of the very interesting forms of optical illusion that we see in many places is the hand painting optical illusion. Combination of colors is used so carefully and effectively on the fingers and hand they depict some interesting images like elephant, zebras, or even human beings. The hand painting optical illusion are done so well that they can even display two ballet dancers, a pen stand , a castle, two players kicking the football or sprinter ready to start the race. Such hand painted optical illusions is liked by the kids very much and they get amused when they see them in different shows or gatherings. Optical illusion is of three types- literal optical illusion, physiological optical illusion and cognitive optical illusion.
Looks like a real tiger, but it is just an illusion painted on a hand.