When you look at the picture below, do you see straight or curved lines? That's the debate triggered by the viral optical illusion that's now raging on social media. The image is an eight-by-eight ...

Peripheral vision is what you see beyond your direct line of sight. It helps provide a complete sense of your surroundings without moving your head. Jump to Key Takeaways. Within the eye, rods and ...

Most of us have at some point felt the sensation that someone is staring at us in our peripheral vision. A quick glance is all it takes to confirm or deny this sensation. Sometimes there really is a ...