Human and cat vision differ significantly when compared because of the retina, a layer of tissue at the back of the eye that contains cells known as photoreceptors. When comparing human and cat vision, the retina is the most significant distinction between the two. Light rays are converted into electrical impulses by photosensing cells in the retina, which are then processed by nerve cells and relayed to the brain, where they are interpreted as the images we see.
Rods and cones are the two types of photoreceptor cells that have been identified. It is the rods that are in charge of governing peripheral and night vision. They are capable of discriminating between different shades of gray and different levels of brightness and contrast. Cones are in charge of regulating day vision and color perception in the human eye.