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ophthalmic nerve n the one of the three major branches or divisions of the trigeminal nerve that supply sensory fibers to the lacrimal gland, eyelids, ciliary muscle, nose, forehead, and adjoining parts called also ophthalmic, ophthalmic division compare MANDIBULAR NERVE, MAXILLARY NERVE

the smallest of the three branches of the trigeminal nerve. It supplies sensory fibres to the eyeball, conjunctiva, and lacrimal gland, to a small region of the nasal mucous membrane, and to the skin of the nose, brows, and scalp.