At first glance, a uniform array of the number '1' offers little intrigue, but delve deeper and you'll reveal a lone letter ...

This optical illusion shows a noisy, grainy pattern that looks like pure visual chaos at first glance. Hidden in this picture ...

Hidden number and letter optical illusions are some of the most satisfying puzzles because they look unbelievably simple ...

Optical illusions like this one to find a hidden number exploit your visual processing system and brain's ability to make assumptions in the absence of complete information. But if you possess sharp ...

Optical illusion challenges like this one are designed to test focus, speed, and attention to detail. They look simple at ...

Optical illusions have gained a lot of popularity recently, as they get our brain to exercise, and can be the perfect test of ...

If you have never seen an optical illusion, it is an image that makes you see things differently than they actually are. Optical illusions trick your eyes into believing you see something that is not ...

Can you see through the camel-flage? Another day another wildlife safari for the eyes: In this animal-based optical illusion, viewers are challenged to spot the camel within the spectrum of colors.

Optical illusions play on the brain's biases, tricking it into perceiving images differently than how they really are. And now, in mice, scientists have harnessed an optical illusion to reveal hidden ...

Have you ever felt that a person in a portrait is watching you, their eyes following you about a room? This optical illusion is known as the Mona Lisa effect, after Leonardo da Vinci’s famously ...