Our pick of the best optical illusions of all time will leave you amazed and confused in equal measure.

Optical illusion challenges have taken over the internet, testing how easily our eyes and brains can be fooled. From shifting shapes to colour-changing images, these puzzles spark conversations, ...

Visual illusions of motion are a major source of interest in the vision research community. Explaining how a still image can produce an illusory perception of motion is important for a more complete ...