Compared with humans, cats have special eyes. They have better night vision and can see smaller details. Cats' pupils can contract and expand rapidly to adapt to strong sunlight and dim light. In the cat's visual system, the retina contains a large number of photoreceptor cells, some of which are unique rod-shaped cells, which makes their vision capture low-brightness images more effectively. Color recognition is also related to the type of visual cells in cats.

2. Cat's perception of color

According to scientific research, cats' perception of color is much worse than that of humans. There are fewer types of photoreceptor cells in their retinas than humans, only rod cells and a few cone cells. Unlike humans, these cone cells can only perceive blue and yellow light, but not red and green, so cats can't see red and green, and they see more blue and gray.

In addition, the cat's visual system is more gray, that is, it can see more gray changes. This means that some colors that look the same to humans may be different to cats, which explains why sometimes they react differently to objects with the same color but different brightness.

3. The color blindness of cats

From the definition of color blindness, cats are clinically color-blind because they can't tell red from green. But in visual recognition, cats' visual system is more color blind, because they can quickly identify the contours of animal movements.

Although cats have fewer cones in their visual system, their eyes have a higher refresh rate. This means that cats can see objects moving at high speed more clearly, which is very important for them because they are hunters.

4. The world seen by cats

Generally speaking, the world seen by cats is different from that seen by humans. They can see more details and grayscales, but their perception of color is far lower than ours. This means that some colors of clothes or indoor decorations may look bright in our eyes, but they may not stand out in the cat's eye. However, this does not mean that the visual system of cats is worse than that of humans. They have adapted to their living environment and become one of the most successful hunters on earth.