Section 5
SEC. 5. The present Board of Optical Examiners is hereby authorized to hold a special examination, within three months from and after the approval of this Act, exclusively for persons who, on March eleventh, nineteen hundred and eighteen, had been practising the profession of optician for a period of not less than one year prior to said date, with an establishment legally open to the public, without. having the proper diploma. Said examination shall be practical and shall be made by means of the trial case.