An optical illusion is a visual phenomenon where our perception of thinking about an image differs from objective reality.

Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...

This image seems to mimic the effect of movement-based vision. Puzzle lovers are questioning their vision after gazing at this trippy moving portrait, which seemingly transforms into different objects ...

Welcome to the world of optical illusions, where nothing is as it seems! Get ready to challenge your brain and eyes with this ...

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Today I learned that scientists study optical illusions. I always thought they were just for fun. A team of psychologists studied variations of this “expanding hole” illusion to determine what effects ...

Check out some of these optical illusions, below — and see how you perceive images placed before your eyes. Just how do optical illusions work? "From an evolutionary standpoint, optical illusion is ...

An optical illusion featuring concentric rings reveals fascinating insights into personality. Observers who perceive the ...

This trippy image appears to be a pigment enigma. Puzzle lovers are straining their brains over this optical illusion, which reportedly fools the viewer into thinking that they have gone colorblind.

Vincent van Gogh’s The Starry Night is arguably the most famous and widely appreciated painting ever. But have you ever seen it move? Now you can, thanks to this wild, but simple, optical illusion.

You look at an image of a black circle on a grid of circular dots. It resembles a hole burned into a piece of white mesh material, although it’s actually a flat, stationary image on a screen or piece ...