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opt out
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optic chiasma
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optic nerve
op·tic nerve (plural op·tic nerves)


noun 
Definition:
 
nerve transmitting light signals to brain: either of the second pair of cranial nerves whose nerve fibers transmit visual light signals from the eye to the brain
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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