15 Best Optical Illusions Of All Time

An optical illusion is a phenomenon that tricks our brain to believe in something that's either wrong, or not there in the first place. Our eyes and brain work together to help us see the things around us. There are two types of optical illusions. Our eyes cause the first type of illusion, Eyes see something wrong and send false visual signals to the brain. The second type of illusion is caused by the brain, where it automatically makes a false assumption based on the information sent by eyes. Optical illusions are fun! Check these fifteen best optical illusions of all time.