Optical illusion pictures are designed to trick the human mind and are regarded as one of the simplest tests to determine ...

Optical illusions are tricky images that test how we experience and perceive the world around us. They help us understand how ...

Optical illusions are a great way to train your brain, even if they can leave you frustrated at times, which is what this ...

The article describes an optical illusion where a piano is hidden among zebra stripes. To solve it, one must seek rectangular ...

THIS is the brainteaser that asks you to combine more than one skill – pictures and words – in a punishing game of intellect.

Challenge your brain with this optical illusion IQ test online! Spot the hidden pencil in just 5 seconds in this tricky ...

Challenge yourself with optical illusions designed to test your observation skills and creativity. Focus on the 4th row to ...

The first thing you see in this optical illusion picture reveals whether you are a logical or intuitive type of problem ...

This fun optical illusion tests your ability to focus! The cluster of related numbers conceals a number. Within 4 seconds, ...

This fun optical illusion tests your ability to focus! The cluster of related words conceals a word. Within 9 seconds, ...

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

Choosing the right materials is key to creating DIY optical illusion art: High-quality drawing paper: Choose paper with a ...