Every person practicing optometry shall display his certificate of registration or exemption in a conspicuous place, and whenever required exhibit such certificate to said Board of Examiners or its authorized representatives.

Laws 1927, HB 169, c. 80, p. 120, § 6; Amended by Laws 1990, HB 1728, c. 163, § 6, eff. September 1, 1990.