Though we may think that the world is exactly as we see it, studies about optical illusion suggest that it is far more ...

An optical illusion shared on social media has left people bewildered and searching for an explanation. The image showcases circles, but it’s difficult to determine how many there are.

Optical illusions are captivating puzzles that make people question their own perceptions. These mind-bending visuals are not only enjoyable to look at, but they also challenge the way we process ...

THERE are 16 circles hidden in this striped, 3D-like optical illusion. It is extremely hard to focus on finding circles while you are staring at this barcode-like image. “First time viewers of ...

IQ Test: You have only 10 seconds to observe the image carefully and tell how many circles are there in this optical illusion image. This will reveal your IQ, observation power, spot hidden ...

The Coffer illusion is an award-winning image that has long fascinated Brits due to its deceptive design. So, how quickly can you find the 16 circles hiding in plain sight?

Another optical illusion - an incredibly simple line drawing - has gone viral on social media as users test exactly what it says about them. What do you see?

For The Times’s summer birding project, I spoke to the field guide illustrator about how to sketch a bird. Here’s how he draws a black-capped chickadee → Start with a circle, then add an ...

Optical illusions occur because of the way our brain processes visual information. The human vision system is complex but not perfect. When light enters the eyes, it is converted into signals by ...