This illusion – named Pinna's Illusory Intertwining Effect – first appeared in Shifts of Edges and Deformations of Patterns ...

Think you've got sharp eyes? Try spotting 8 hidden mistakes in this fast-moving optical illusion challenge - you have just 10 ...

This classic duck-rabbit optical illusion tricks your brain into switching perspectives. What you see might reveal whether ...

Optical illusions use light, colour and patterns to cause a viewer to see something that's completely different to reality ...

Think it’s just grass? Look again. A buffalo is hiding in nature, and this illusion proves your brain can miss what’s right ...

A cleverly hidden dog in a cosy living room stumped internet users as they struggled to spot it in an optical illusion shared ...

An engaging optical illusion is challenging viewers to find the number '5131' hidden within a field of '5151' digits. This puzzle tests observation sk ...

For less terrifying optical illusion murals see these brilliant artworks made with a spray can. And if you want to continue ...

This viral kiwi optical illusion is messing with minds. Can you spot the four hidden fruits in just 10 seconds? Most people ...

Test your cognitive skills with this engaging optical illusion! Hidden among a sea of 'S' letters lies the number 5, and your ...

Optical illusions aren't just made for entertainment purposes, but they're a perfect way to test your knowledge as well as ...

This illusion – named Pinna's Illusory Intertwining Effect – first appeared in Shifts of Edges and Deformations of Patterns written by Baingio Pinna and Richard L Gregory, an academic journal ...