Ophthalmology 7: Feline Ophthalmology

Question 1

Peculiarities of cat eyes.

Answer 1

200 degrees field of view.
Predators so eyes v rostral.
Binocular vision 140 degrees.
Large cornea.
Deep anterior chamber.
Posterior location of the lens.
Vertical slit pupils allow wider dilation at night.

Question 2

What do cats see?

Answer 2

Increased sensitivity to light:
- tapetum lucidum.
- light-sensitive rod photoreceptors.
- area centralis.
- increased motion detection.
- nocturnal vision: adaptations – see in shades of grey.
- limited capacity for colour vision bi or trichromatic vision.