15 U.S. Code § 7603 - Prescriber verification
(a) Prescription requirement
A seller may sell contact lenses only in accordance with a contact lens prescription for the patient that is—
(b) Record requirement
A seller shall maintain a record of all direct communications referred to in subsection (a).
When seeking verification of a contact lens prescription, a seller shall provide the prescriber with the following information:
(2) Contact lens power, manufacturer, base curve or appropriate designation, and diameter when appropriate.
(d) Verification events
A prescription is verified under this chapter only if one of the following occurs:
(2) The prescriber informs the seller that the prescription is inaccurate and provides the accurate prescription.
(e) Invalid prescription
If a prescriber informs a seller before the deadline under subsection (d)(3) that the contact lens prescription is inaccurate, expired, or otherwise invalid, the seller shall not fill the prescription. The prescriber shall specify the basis for the inaccuracy or invalidity of the prescription. If the prescription communicated by the seller to the prescriber is inaccurate, the prescriber shall correct it.
(f) No alteration
A seller may not alter a contact lens prescription. Notwithstanding the preceding sentence, if the same contact lens is manufactured by the same company and sold under multiple labels to individual providers, the seller may fill the prescription with a contact lens manufactured by that company under another label.