Why are owls such efficient predators? Large eyes and flexible necks.
We don't perceive color in our peripheral vision because we have no cones, which sense light frequencies, on the outer edge of our retina.
Eye movements can cause you to mistakenly perceive isolated objects as moving.
From the man in the moon to the Virgin Mary's face on a cinnamon roll, humans have a tendency to see things that aren't there.
Mona Lisa's smile appears and disappears as we alternate between peripheral and central vision.
Dung beetles use moonlight's polarization to guide its dung hunts.
Contact lenses bring objects into closer and clearer focus than glasses.
Parents' line of vision is eye-catching to infants.
Is drinking yourself 'blind' just an exaggeration, like 'eating till you burst'? Or can alcohol really turn out the lights?
Mate selection is tricky business. Here's how one amphibian merges two senses to narrow down its options.