do cats have night visions?

Yes. Cats have special membranes called "nictating membranes" which enhance their vision low light. Many cats are night time predators, and it's an important survival thing. Other animals have versions of this. You'll have seen films of light reflecting from animals' eyes. That's light reflected from those membranes. It's really an improved version of their normal eyesight.

Yes, most cats can see in the dark. There vision is not perfect, but it is definitly better than ours when it is pitch black. Their whiskers also help sense things around them, they are used to sense movement and depth among other things. This helps them maneuver better in dark places. However cats also don't see all colours as us humans do. Most of the colours they see the best are reds, oranges and pinks.

I believe what you read meant that cats can see in the dark (i.e. night vision). Most cats are able to see in the dark using a special feature that has been built into their eye (this also causes the yellow/green color in their eyes when you flash light on them in the dark). I say most cats because certain breeds - like Siamese cats - lack this feature. We have 2 cats that are part Siamese. One has night vision, the other doesn't.