The answer is A. 1.
1. Optic nerve
2. nerve endings
3. Retina
4. lens
5. Cornea
6. Pupil
The eyeball is filled with a water-like fluid. In the front of the eyeball, there is the cornea (5). It is a transparent structure that refracts light. A portion of a light passes through the pupil (6) which allows light to enter the eye. Once the light enters the eye, it enters the lens (4). The light later reaches the retina (3). Thanks to nerve endings, all visual information is transported to optic nerve which carries impulses to the brain.
