The following constitutes grounds for disciplinary action under chapter 18.130 RCW:
(1) Any form of fraud or deceit used in securing a license; or
(2) Any unprofessional conduct, of a nature likely to deceive or defraud the public; or
(3) The employing either directly or indirectly of any person or persons commonly known as "cappers" or "steerers" to obtain business; or
(4) To employ any person to solicit from house to house, or to personally solicit from house to house; or
(5) Advertisement in any way in which untruthful, improbable or impossible statements are made regarding treatments, cures or values; or
(6) The use of the term "eye specialist" in connection with the name of such optometrist; or
(7) Inability to demonstrate, in a manner satisfactory to the secretary or the board of optometry, their practical ability to perform any function set forth in RCW 18.53.010 which they utilize in their practice.