Section 351.359 - Prescription(a) An ophthalmic lens prescription must include:(1) the signature of the optometrist or therapeutic optometrist; and(2) the information and parameters the optometrist or therapeutic optometrist considers relevant or necessary.(b) The prescription may not contain a restriction that limits the parameters to a private label not available to the optical industry as a whole. Acts 1999, 76th Leg., ch. 388, Sec. 1, eff. 9/1/1999.