Ophthalmic nerve

a sensor nerve. It suppliessensation to cornea, ciliary muscles, iris, lachrimal gland, mucous membrane of nose, skin ofeyelids, eyebrows, forehead and nose. Just before entering the orbit, through the sphenoidalfissure, it divides into three branches, lachrimal,frontal and nasal.

Source: Ophthalmic Dictionary including pronunciation, derivation and definition of the words used in Optometry and Ophthalmology by James J. Lewis, Oph. D. Professor of Optometry in the Northern Illinois College of Ophthalmology and Otology, Chicago.