How Night Vision Works And Why Humans Don’t Glow at Night?
Why Do Cat’s Eyes Glow at Night but Humans Don’t!?
Discover & Learn: One Comic At A Time
Night vision is often shown as glowing eyes in movies. In reality, it works very differently. This comic explains how human and cat eyes behave in low light and why seeing at night has nothing to do with glowing.
Cats don’t actually produce their own light. Their eyes appear to “glow” because a reflective layer called the tapetum lucidum reflects light back through the retina. Humans don’t have this layer.
As light fades, human eyes rely more on cells that detect brightness and movement, not colour.
Cats have a reflective layer that helps reuse light, making them better at seeing in darkness.
The comic walks through this idea step by step in a visual, easy-to-understand way.