Using a computer model of the retina, researchers have been able to trace the cause of the expanding hole illusion ...

If you found it within 5 seconds, congratulations! You have top-tier observation skills and a brain built for problem-solving ...

Think you have a sharp vision? Put your observation skills to the test with this mind-bending optical illusion! In this busy ...

The smooth wings of fruit-sucking moths appear to be ridged like a leaf – but the resemblance is created by nanostructures ...

Optical illusions have been proven to be a great brain ... "Clearly cat but looks a bit like a bird from another angle." Another user wrote: "It’s either a bunny rabbit or a duck," with a ...

Optical illusions have been shown to offer health benefits as well. They enhance visual-spatial reasoning, sharpen attention ...

Optical illusions are very effective at deceiving ... that our brains can interpret things differently depending on the angle from which they are viewed. It is not on the left side of the picture.

Challenge your observation skills with this exciting brainteaser by identifying the subtle error in a backyard garden image.

There is a mathematical side to optical illusions. One professor studies ... out objects with faces that are connected in 90-degree angles – like structures we are used to seeing in real life ...

A former Black Hawk helicopter pilot says the oncoming angle of the helicopter and the American Airlines jet that collided ...