Where a doctor of optometry rents or buys space from and practices optometry on the premises of a commercial or mercantile concern:

(1) The practice must be owned by the doctor of optometry solely or in conjunction with other licensed doctors of optometry, and in every phase be under the exclusive control of the doctor(s) of optometry. The prescription files are the sole property of the doctor(s) of optometry.

(2) The space must be definite and distinct from space occupied by other occupants of the commercial or mercantile concern.

(3) The doctor(s) of optometry must be clearly identified to the public. Such identification must include the name of the doctor(s) of optometry and the term "doctor of optometry" or "independent doctor of optometry" or other similar phrase.

(4) All signs, advertising and display must be separate and distinct from that of the other occupants and of the commercial or mercantile concern. All optometric practice advertisements or announcements on the premises of a commercial or mercantile concern shall not make references which could reasonably convey the impression that the optometric practice is controlled by or part of the commercial or mercantile concern.