Sharp vision is essential for artists, write Margaret S. Livingstone, a professor of neurology at Harvard Medical School, and Bevil R. Conway, a junior fellow in the Harvard Society of Fellows. Yet a ...

Our perception of how large or small things are in the world is systematically influenced for how we perceive distance or depth. This is most famously shown by the Ponzo Illusion (discovered by Mario ...

This optical illusion will test your ability to assess, analyse, and spot what stands out in the pool of similar-looking ...

Depth perception is a fundamental aspect of vision, affecting everything from driving and playing sports to simple daily tasks. As LASIK surgery continues to be a popular vision correction option, ...