Optic nerve


The optic nerve connects our eye and brain together to form a visual image (what we see). When the photoreceptor cells in the retina detect light, an electrical impulse is generated which is then transmitted to the brain through the optic nerve. The location of the optic nerve is a natural blind spot as there are no photoreceptor cells present. However, we do not notice them as the vision of both eyes overlap each other.

This is a three dimensional illustration of the eye. The structures are listed from front to back. The outermost structure is the cornea, followed by the sclera, pupil, iris, lens, retina, macula, optic disc and the optic nerve.
A diagram of the eye showing the location of the retina, macula and the optic nerve
Photograph of the back of the eye showing the retina and the optic nerve