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.