In this subtitle the following words have the meanings indicated. “Blind” means that an individual’s visual acuity: Does not exceed 20/200 in the better eye with correcting lenses; or Exceeds 20/200 but with a field of vision that at the widest diameter subtends an angle not greater than 20 degrees. “Direct labor hours” includes all hours spent in the manufacture and assembly of a product made by blind individuals. “Direct labor hours” does not include time spent in the administration, supervision, shipping, and inspection of a product made by blind individuals. “Person” includes an individual, corporation, business trust, statutory trust, estate, trust, partnership, association, two or more persons having a joint or common interest, or any other legal or commercial entity. “Product made by the blind” means a product if not less than 75% of the total personnel engaged in the direct labor hours in the manufacture and assembly of the product are blind workers.