Optical illusion Visual challenge: If you have a keen eye, find the snail hidden in this optical illusion in less than 13 seconds ?
Optical illusion An optical illusion is a type of illusion that plays with your eyesight. Optical illusions challenge the way our eyes and brain work together to see different sensations. There are different types of optical illusions, including physical, physiological and cognitive, and within each category there are ambiguities, distortions, paradoxes and fictions. An optical … Read more