4. An optometrist who holds one of the permits referred to in section 1 must, for each reference period, update his or her knowledge by taking part in the upgrading program approved by the board of directors and provided for in section 5.
In this Division, “reference period” means any 3-year period starting on a date determined by the board of directors.
846-2018O.C. 846-2018, s. 4.