Why do cats' eyes glow? Cats' eyes shine because they have a ability called "eye reflection", which reflects light, making them look brighter.
The cat's eyes do not glow. When the light hits the cat's retina and hits the iris at the back of the eyeball, part of the aftermath of the eyeball will be reflected.
So when you use a light source to shine on the cat's eyes at night, you will find that its eyes are glowing.
Cats can have night vision, but they need to supplement taurine. Once taurine is lacking, the cat's night vision ability will be affected.