Cats see well, but somewhat differently than we do. They have a slightly wider angle of vision, but their visual acuity is lower, and they are short-sighted by our standards. But they are very good at focusing on small moving objects, which helps them hunt successfully. Cats' color vision also differs from human's; for example, we see blue and green objects approximately the same, but shades of red look greenish for a cat. And it's a well-known fact that cats can see very well in the dark. They need far less light to see well than we do.