ophthalmic nerve

n.
  1. The ophthalmic branch of the trigeminal nerve, whose frontal, lacrimal, and nasociliary branches supply sensation to the eye socket and its contents, the anterior part of the nasal cavity, and the skin of the nose and forehead.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.