optic nerve

noun, Anatomy
1.
either one of the second pair of cranial nerves, consisting of sensory fibers that conduct impulses from the retina to the brain.
Origin
1605-15
Examples from the web for optic nerve
  • In patients with glaucoma, fluid builds up within the eye and puts pressure on the optic nerve.
  • The device stimulates the retina's remaining healthy cells, causing them to relay the data to the optic nerve.
  • The anatomy of the optic nerve suggests that covering one eye does not cause input to only one brain hemisphere.
  • The electrodes stimulate the neurons in the retina, which send secondary signals down the optic nerve to the brain.
  • At the point where the optic nerve is connected in a normal eye, there's a patch in the retina that doesn't respond to light.
  • The optic stalk is converted into the optic nerve by the obliteration of its cavity and the growth of nerve fibers into it.
  • The symptoms are due to the tumor growing and pressing on the optic nerve and nearby structures.
  • Optic gliomas occur in the optic nerve and other parts of the eye.
  • It was pressing dangerously on his optic nerve and bulging into his nasal sinus, where it had actually eaten through a bony wall.
  • The eye care provider will then use special lenses to view your retina, blood vessels, and optic nerve.
British Dictionary definitions for optic nerve

optic nerve

noun
1.
the second cranial nerve, which provides a sensory pathway from the retina to the brain
optic nerve in Medicine

optic nerve n.
A nerve that originates from the retina, passes out of the eye socket to the chiasm, where part of its fibers cross to the opposite side and pass to the geniculate bodies and anterior quadrigeminal body. Also called second cranial nerve.

optic nerve in Science
optic nerve  
Either of the second pair of cranial nerves, which carry sensory information relating to vision from the retina of the eye to the brain. Disease or injury of the optic nerve can result in partial or total blindness.
optic nerve in Culture

optic nerve definition


The nerve that carries electrical signals from the retina in the eye to the brain.

Encyclopedia Article for optic nerve

second cranial nerve, which carries sensory nerve impulses from the more than one million ganglion cells of the retina toward the visual centres in the brain. The vast majority of optic nerve fibres convey information regarding central vision

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