S.C. Code Ann. § 40-38-280

The services and appliances related to ophthalmic dispensing must be dispensed, furnished, or supplied to the intended wearer or user only upon prescription issued by a physician or an optometrist; however, duplications, replacements, reproductions, or repetitions may be provided without prescription and are deemed to be ophthalmic dispensing, as if performed on the basis of a written prescription. Oral prescriptions are permitted if the optician maintains a written record. Contact lenses may be dispensed only in accordance with Section 40-38-270.