N.C. Gen. Stat. § 90-253
Nothing in this Article shall be construed to apply to optometrists, or physicians trained in ophthalmology who are authorized to practice under the laws of this State, or to an unlicensed person working within the practice and under the direct supervision of the optometrist or physician trained in ophthalmology. An apprentice or intern registered with the Board and working under direct supervision of a licensed optician, optometrist or physician trained in ophthalmology will not be deemed to have engaged in opticianry by reason of performing acts defined as preparation and dispensing, provided the apprentice is in compliance with the rules of the Board respecting the training of apprentices.
As used in this section, "supervision" means the provision of general direction and control through immediate personal on-site inspection and evaluation of all work constituting the practice of opticianry and the provision of consultation and instruction by a licensed dispensing optician, except that on-site supervision is not required for minor adjustments or repairs to eyeglasses.
N.C. Gen. Stat. § 90-253