51.10. An optometrist advertising a price, a reduction, a discount, free goods or services or a commercial policy must:(1) specify the nature and scope of the services and the characteristics of the goods offered, unless all the goods on the premises are involved;
(2) indicate that additional goods or services are required but not included, if such is the case;
(3) mention any important fact that may help the public make an informed choice regarding the goods or services offered, particularly the fact that a good has been discontinued;
(4) give more importance to the goods or services offered than to the price, reduction, discount or commercial policy.
The explanations and indications must be given in such a manner as to inform persons who have no particular knowledge of the goods or services offered by an optometrist.