This illusion – named Pinna's Illusory Intertwining Effect – first appeared in Shifts of Edges and Deformations of Patterns ...

An optical illusion is a riddle where the viewer perceives the image differently. These illusions come in a variety of types, ...

Economic Policy This square isn’t actually rotating. Here’s why. July 7, 2016 More than 8 years ago Summary Read on to understand why this square isn't actually rotating ...

This head-spinning optical illusion will have you second guessing your own sanity as you try to pin down one of the rotating rings.

This video shared on Twitter captures how a cat and three dogs reacted to an optical illusion.

An optical illusion in the form of a 16-second clip uploaded by “Inside Edition” shows what appears to be a white dog lazing around with its head resting on a roof. But the video has viewers ...

Among the latest additions to this ever-growing collection is this optical illusion featuring rotating circles. This black-and-white optical illusion gives off a remarkable 3D effect at first glance.

Mind This optical illusion expands as you stare at it - and now we know why Using a computer model of the retina, researchers have been able to trace the cause of the expanding hole illusion By ...

Optical illusion has people stumped Do you see a dog or a man? Baffling optical illusion leaves people divided Bizarre optical illusion makes couple look like they've swapped heads ...

Test your sharp eyesight and observation skills with this optical illusion. Spot the second hidden dog in an image where two women converse, and a dog ...

This winter scene optical illusion is really not what it seems, but if you can spot the third dog you have an unusually high level of attention to detail and enviable observational skills ...

This mind-boggling optical illusion may baffle you, even after you learn that you didn't see what you thought you did.