A person is deemed to be practicing optometry within the meaning of this chapter who:

1. (1) displays a sign or in any way advertises as an optometrist;
2. (2) employs any means, other than the use of drugs except as provided in this chapter, for the measurement of the powers of vision or the adaptation of lenses for the aid of vision;
3. (3) in the sale of spectacles, eyeglasses, or lenses, uses lenses in the testing of the eye therefore other than lenses actually sold;
4. (4) examines the human eye by the employment of any subjective or objective physical means, without the use of drugs except as provided in this chapter, to ascertain the presence of defects or abnormal conditions for the purpose of relieving them by the use of lenses, prisms, or other physical or mechanical means;
5. (5) practices orthoptics or prescribes or fits contact lenses;
6. (6) administers pharmaceutical agents, including pharmaceutical agents for topical application, for the diagnosis of ocular and ocular adnexal eye disease as provided in this chapter; or
7. (7) administers or prescribes, or both, pharmaceutical agents, including oral and topically applied medications, for the diagnosis and treatment of ocular and ocular adnexal eye disease as provided in this chapter.