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optic nerve |
Also found in: Medical, Legal, Encyclopedia, Wikipedia, Hutchinson | 0.03 sec. |
optic nerve n (Life Sciences & Allied Applications / Physiology) the second cranial nerve, which provides a sensory pathway from the retina to the brain
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Translations optic nerve n → Sehnerv m How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| In the Articulata we can commence a series with an optic nerve merely coated with pigment, and without any other mechanism; and from this low stage, numerous gradations of structure, branching off in two fundamentally different lines, can be shown to exist, until we reach a moderately high stage of perfection. Just as a photographic plate receives a different impression of a cluster of stars when a telescope is part of the intervening medium, so a brain receives a different impression when an eye and an optic nerve are part of the intervening medium. The light from it had beat upon his sealed lids, and the eyes and the optic nerves had pulsated to little, sparklike flashes, warm-coloured and strangely pleasing. |
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