Fast sports call for more than strength or speed. Clear vision, stable focus, and quick depth perception shape how well an ...

We all know that having two eyes is what allows humans and many animals to see in stereoscopic vision and judge distance, but there are many depth clues in any scene that help us determine depth while ...

An optical illusion is a visual phenomenon where our perception of thinking about an image differs from objective reality. This image is seen as a motion or spiral optical illusion (specifically a ...