Our pick of the best optical illusions of all time will leave you amazed and confused in equal measure. Optical illusions come in many forms, from horses and tigers to moving shapes and floating ships ...

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

Only people with exceptional intelligence and vision—like Superman himself—will be able to find the hidden O in this illusion filled with tricky Qs. If your IQ is 115 or above and you trust your eye ...

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 ...