![]() Each photoreceptor is attached to a nerve fiber, leading to a large bundle called the optic nerve. It is tightly packed with photoreceptors making images sharp. The area centralis is the most sensitive part of the retina. This is why cats can see up to six times better than humans in dim light. Cats have many rod cells, which collect light. The cones allow visual acuity and binocular vision. The retina contains photoreceptors the two mains photoreceptors are the cones and rods. The ciliary muscles relax to allow distant objects to be seen. Ciliary muscles contract to make the lens thicker, allowing closer objects to be seen. The lens changes shape to allow the focus of the light onto the retina. The circular sphincter muscle controls the pupil. The less light available, the larger the pupil becomes. ![]() It shrinks and enlarges to allow light into the eye. The iris controls how much light enters the eye by making the pupil larger or smaller. The iris is the colored circular area at the front of the eye. The cornea also focuses light onto the retina at the back of the eye. ![]() The cornea is the clear protective dome at the front of the eye, which lets in light. The sclera is covered by the conjunctiva, a thin membrane covering the inside of the eyelid. The eye itself contains the sclera, which is the white of the eye. The orbit comprises several bones that contain muscles, blood vessels, nerves, and tear production structures. The cat’s eye has many parts that make up the whole. Eyelash Medical Conditions in Cats Cat Eye Anatomy and Structure.
0 Comments
Leave a Reply. |