N.C. Gen. Stat. § 90-235
Within the meaning of the provisions of this Article, the term "dispensing optician" defines one who prepares and dispenses lenses, spectacles, eyeglasses and/or appurtenances thereto to the intended wearers thereof on written prescriptions from physicians or optometrists duly licensed to practice their professions, and in accordance with such prescriptions interprets, measures, adapts, fits and adjusts such lenses, spectacles, eyeglasses and/or appurtenances thereto to the human face for the aid or correction of visual or ocular anomalies of the human eye. The services and appliances related to ophthalmic dispensing shall be dispensed, furnished or supplied to the intended wearer or user thereof only upon prescription issued by a physician or an optometrist; but duplications, replacements, reproductions or repetitions may be done without prescription, in which event any such act shall be construed to be ophthalmic dispensing, the same as if performed on the basis of a written prescription.
N.C. Gen. Stat. § 90-235