Ohio Revised Code Title XLVII. Occupations Professions § 4725.49

(A) The state vision professionals board may provide for the examination of applicants by designing, preparing, and administering the qualifying examinations or by contracting with a testing service that is nationally recognized as being capable of determining competence to dispense optical aids as a licensed spectacle dispensing optician or a licensed spectacle-contact lens dispensing optician. Any examination used shall be designed to measure specific performance requirements, be professionally constructed and validated, and be independently and objectively administered and scored in order to determine the applicant's competence to dispense optical aids.

(C) If the number of applicants for any qualifying examination is less than ten, the examination may be postponed. The board or testing service shall provide the applicant with written notification of the postponement and of the next date the examination is scheduled to be administered.

(D) No limitation shall be placed upon the number of times that an applicant may repeat any qualifying examination, except that, if an applicant fails an examination for a third time, the board may require that the applicant, prior to retaking the examination, undergo additional study in the areas of the examination in which the applicant experienced difficulty.