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Optic Nerve

CRANIAL NERVES ------- Optic nerve (CN 2), sensory only. Receptors in the retina (rods & cones) synapse with bipolar cells, which synapse with ganglion cells. Ganglion cells form optic nerve. Crossover at optic chiasm. Tags: skull, brain, eye, anatomy, dissection, human, body, health, nature, science, biology

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Optic nerve fibres. Coloured scanning electron micrograph (SEM) of axons from the optic nerve. Connective tissue fibres (thread-like) are also visible. The optic nerve visual information from the retina in the eye to the brain. Magnification: x2000 when printed at 10 centimetres wide. Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

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Retina. SEM of a section through a human retina, the light-sensitive tissue that lines the inside of the eye. Light entering the eye passes through several layers of cells before reaching the light receptors. From top to bottom are seen: cell bodies of optical ganglion cells (pale red), which form the optic nerve; cell bodies of bipolar neurons and cell bodies of the receptor cells (red); and the rod (white) and cone (yellow) receptors. Rod cells different

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Eyes are used to capture light and the optic nerves then send signals to the brain where the information is processed into an image. Click to enlarge and to read additional details.

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nanoflowers seeded from nano-sized particles of metals that grow, or self assemble, in a natural process. Eye surgeons would implant these fractal devices within the eyes of blind patients, providing interface circuitry that would collect light captured by the retina and guide it with almost 100 percent efficiency to neurons for relay to the optic nerve to process vision.

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from Nurseslabs

Nursing Mnemonics and Tips

Glaucoma Glaucoma is a disease that is often associated with elevated intraocular pressure, in which damage to the eye (optic) nerve can lead to loss of vision and even blindness.

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Optic nerve fibres. Coloured scanning electron micrograph (SEM) of axons from the optic nerve. Connective tissue fibres (thread-like) are also visible. The optic nerve visual information from the retina in the eye to the brain. Magnification: x2000 when printed at 10 centimetres wide.

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from Health Care and Beauty Tricks

What Can Eyes Tell About Your Health! Blood Vessels And The Optic Nerve Reveal Diabetes And High Blood Pressure!

What Can Eyes Tell About Your Health! Blood Vessels And The Optic Nerve Reveal Diabetes And High Blood Pressure!