Every so often an optical illusion comes along that actually makes me feel ill. And this is one of them. What appears to be a series of decidedly unstraight lines placed in a wonky grid actually turns ...

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 ...

An optical illusion is a visual phenomenon where the brain misinterprets what the eyes perceive, creating a false or misleading impression of reality. This occurs because the brain processes visual ...