This optical illusion is a fantastic way to test your observation skills. If you managed to find all the 5s, ...

They say seeing is believing but can you really trust your eyes? From eye-boggling images to logic-defying illusions that play with the subconscious mind, we’ve gathered five famous optical ...

Optical illusions have always fascinated people, captivating us with their ability to trick the eye and challenge the brain.

In this stationary image, viewers should see the circles rotating in different directions. The effect is particularly pronounced when the viewer's eyes move or blink. Disclaimer: AAAS and EurekAlert!

Medical imaging experts are adept at solving common optical illusions, according to new research. The research is the first to show that people can be trained to do better at solving visual illusions, ...

Scientists study optical illusions to learn how the visual system of our eyes and brain operates. Some kinds of illusions work because of the way our eyes and brain process images. Other illusions ...

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or ...

A mind-boggling optical illusion has tested the eyesight of internet users. Can you solve it? This optical illusion, featuring a hidden hippo in not-so-plain sight among the rhinos, has gone ...