Wis. Stat. § 449.03: Enforcement.

(1) No rule made by the examining board shall expand the practice of optometry or affect the practice of dispensing opticians, nor shall the examining board enact rules which forbid the employment of an optometrist or declare such employment unprofessional conduct, or prohibit the operation of an optometric department by optometrists in a mercantile establishment.

(2) The chairperson or the secretary of the examining board shall cause actions to be instituted for violations of this chapter. The district attorney of the county in which the offense has been committed shall promptly prosecute upon being informed thereof from any source.