Cat vision development (6)

Old traditional believe is cat is color blindness. However, cat’s retina has color differentiable cell. Its best frequency detection is in blue zone. This color vision is not necessary for cat’s hunter life.

cat vision development (5)

The motion things capture capacity is very good. Cats can detect things that move with only 0.4 cm/second. Each eye has visual field spanning from 155 to 208.5 degree and has 90 to 130 degree of overlapping field.

cat vision development (4)

Although the sensitivity to light is better in cat than in human, scattering of lights in the eye balls due to may layers of photoreceptors cell make the resolution worse in cat than in human. Literally, all cats also have some myopia (short-sighted) due to poor lens accommodation to near vision.

Cat Vision Development (3)

Cat eyes aid them to be the good hunters.

The important features are wide visual field and good night vision.

The characteristics of cat eyes

1. Cornea and lens are big and more curved than human's eyes.

2. Pupi is rapidly react to light from a round fully dilated to a slit-like

3. Large numbers of rod photocensitive cells. These cells are very reactive in a dim light.

Cat needs only one-sixth of amount of light that human needs to detect object.

Cat Vision Development (2)

Cat vision and learning starts when the eyes has opened during 5th-14th days. Although the eyes have opened, the visual acuity will be fully developed at about 25th day. Binocular vision will be mature around 47th day. Eyes development will be equal mature cat at 2 month age. Cat vision development is important for the wild cat which is originally the hunter. Domestic cat is still preserved its hunter characteristic through its life.

Cat Vision development

When cat is born, its eye is still closed. The eye structure development is occurred within 3 weeks. Visual cortex electric potential of cat will start from day 4. The electroretinogram signal can be detected from the cat's sixth day of live. Its eyes wil be opened on day 8 at average. (5-14 days) The cat's eyes will be opened completely on day 17.

Do your cat see colours?

We don't know for sure what kind of colours cats can see, but scientific tests indicate that cats can recognize at least some of the colours that we do.