8.—(1) A contractor may arrange for sight to be tested on his behalf by an ophthalmic medical practitioner or optician, but no such arrangements shall be made unless the name of that ophthalmic medical practitioner or optician is included in the ophthalmic list.
(2) Any contractor who makes an arrangement for the regular provision of services by a deputy in terms of paragraph (1) shall notify the Board of the arrangement.
(3) A contractor shall be responsible for all acts and omissions of any person acting as his deputy and of any employee of that person; and a deputy who is himself a contractor shall be jointly responsible to the same extent as the contractor for whom he is deputising.