MHS 226 Eye

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Optic Disk and Nerve

Eyes are the sensory organs responsible for vision. Light is focused by the lens on the retina.

Although most of this eye is poorly preserved, the section passes thru the optic disk and nerve.

- posterior surface of the eye responsible for photoreception. Its structure is better seen on MHS 229 Eye and MHS 302 Eye.
- the axons traveling in the optic nerve layer of the retina converge at the optic disk.
- Lacks rods and cones resulting in a blind spot.
- The central artery and vein pass through the optic disk.
- the axons at the optic disk penetrate the sclera, exit the eye, and form the optic nerve.

Courtesy of Steven McLoon, Department of Neuroscience, School of Medicine, University of Minnesota, Minneapolis, MN.