(a) Nothing in this chapter shall be construed to prohibit other licensed health care professionals from practicing to the full extent of their licenses, nor to apply to any eye screening, State or government eye testing programs, nor to any instruction in any medical, osteopathic, or nursing school.
(b) Nothing in this chapter shall prohibit persons or corporations from making mechanical repairs to spectacles, nor shall it prohibit any person, firm, or corporation engaged in grinding lenses and filling prescriptions from replacing lenses or filling prescriptions issued by a duly licensed optometrist or physician.