It shall not be lawful for any person in this state to engage in the practice of optometry or to hold himself out as a practitioner of optometry, or attempt to determine by an examination of the eyes the kind of glasses needed by any person, or to hold himself out as able to examine the eyes of any person for the purpose of fitting the same with glasses, excepting those hereinafter exempted, unless he has first fulfilled the requirements of this chapter and has received a certificate of licensure from the state board of optometry created by this chapter, nor shall it be lawful for any person in this state to represent that he is the lawful holder of a certificate of licensure such as provided for in this chapter, when in fact he is not such lawful holder or to impersonate any licensed practitioner of optometry, or to fail to register the certificate as provided by law.