optic nerve


Definition of optic nerve

: either of the second pair of cranial nerves that pass from the retina to the optic chiasma and conduct visual stimuli to the brain — see eye illustration

Examples of optic nerve in a Sentence

Recent Examples on the Web Doctors initially diagnosed her with glaucoma, a condition in which abnormally high pressure on the eye damages the optic nerve. Alyssa Marino, USA TODAY, 17 Sep. 2021 This requires immediate medical attention to fix the problem and lower pressure before the optic nerve is damaged. Amy Marturana Winderl, Health.com, 16 Sep. 2021 Over time, this can put undue pressure on the optic nerve. Amy Marturana Winderl, Health.com, 16 Sep. 2021 Born with albinism, which can hamper development of the optic nerve, Crosby had her first guide dog, Keystone, for nearly a decade. Los Angeles Times, 30 Aug. 2021 As the disease inflames the optic nerve, a condition known as optic neuritis, pain and loss of vision in the affected eye can result. Jack Guy, CNN, 11 Aug. 2021 Doctors may also look at other related areas, like the optic nerve. Jack Guy, CNN, 11 Aug. 2021 Light still streams into the eye through the unaffected lens, and that light could still make its way to the brain via the optic nerve. Jeffrey Kluger, Time, 24 May 2021 But their eyes still have the ganglion cells that route these signals to the brain via the optic nerve. Jocelyn Kaiser, Science | AAAS, 24 May 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'optic nerve.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of optic nerve

1615, in the meaning defined above

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Time Traveler for optic nerve

Time Traveler

The first known use of optic nerve was in 1615

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Dictionary Entries Near optic nerve

optic lobe

optic nerve


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Statistics for optic nerve

Last Updated

10 Oct 2021

Cite this Entry

“Optic nerve.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/optic%20nerve. Accessed 20 Oct. 2021.

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More Definitions for optic nerve

optic nerve


Medical Definition of optic nerve

: either of the pair of sensory nerves that comprise the second pair of cranial nerves, arise from the ventral part of the diencephalon, form an optic chiasma before passing to the eye and spreading over the anterior surface of the retina, and conduct visual stimuli to the brain

called also second cranial nerve

More from Merriam-Webster on optic nerve

Britannica.com: Encyclopedia article about optic nerve


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