Optical illusions are tricky images that test how we experience and perceive the world around us. These illusion pictures help us understand how the brain processes complicated visual information.

An optical illusion showed a bird hidden among tyres in a junkyard, challenging users to spot it within 4 seconds.

Optical illusions have a unique way of grabbing attention online. These visual tricks challenge the brain, engaging people in ...

THIS mind-boggling optical illusion is bound to get you scratching your head – especially since only 9% of people can spot ...

Learn about the unique perceptual abilities of radiologists, developed through years of focused training and professional ...

According to current theories of expertise, this shouldn’t happen. Becoming an expert in chess, for example, makes you better ...

In this optical illusion picture, a penguin is hiding in plain sight. Do you have the most observant eyes that can spot the ...

(Also read: Optical illusion: If you can spot hidden bird in this image, you'll be hailed as sharpest observer of the day) ...

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, ...

In today’s optical illusion challenge, only 1% of people with sharp vision can spot the hidden number '99' among a sea of '96' and '69'. This tricky puzzle tests your observation skills and visual ...

Optical illusion personality tests use psychology-based images to reveal traits quickly. By determining what animal you see first in a shared optical ...