(1) Nothing in this part shall be construed to prevent a person licensed in this state as a physician or as an optometrist from performing those services she or he is licensed to perform.
(2) Nothing in this part shall be construed to mean that an employee of a licensed physician or a licensed optometrist shall be required to secure a license under this part, so long as the employee is working exclusively for, and under the direct supervision of, the licensed physician or optometrist and does not hold herself or himself out to the public generally as an optician.
(3) Nothing in this part shall be construed to mean that a practitioner licensed under chapter 458, chapter 459, or chapter 463 shall be required to secure a permit under this part for the operation of an optical establishment.