When we see an illusion created right in front of us, for some reason it becomes harder to wrap our heads around what's happening. For me, the more I watch, the less I seem to understand.

The illusion depicts a checkerboard with light and dark squares, partly shadowed by another object. You need to figure out whether square B is lighter or the same colour as that of A.

While the illusion has been doing the rounds online since 2015, we're still none the wiser about the direction of the cat. See our pick of the best animal optical illusions for more animal ...

Originally published in The Oxford Compendium of Visual Illusions, the illusion of sex shows faces appearing side by side.While one appears to be a female and the other male, they're actually the ...

Variation in the light grey background checkerboard pattern results in different parts of the black circles appearing disfigured and skewed. ... The bumpy circle illusion: apparent shape-distortion of ...

IF an observer views a piece of linoleum, or pavement, marked out as a checkerboard in light and dark squares, it is possible by causing the lines of vision of the two eyes to converge, that is ...

Mind This optical illusion expands as you stare at it - and now we know why. Using a computer model of the retina, researchers have been able to trace the cause of the expanding hole illusion ...

Optical illusions are all over the internet, but we rarely get to see one appear right before our eyes. There are countless types of optical illusions, from the literal to the physiological, but ...

REFERRING to Prof. H. H. Dixon's letter in NATURE of April 30, Miss E. Armitage, Dadnor, Ross, Herefordshire, writes to suggest that the checkerboard appearances may be akin to that commonly ...