639. Duties to be performed on the testing of sight.

The Secretary of State1 may by regulations2 provide that, subject to any exceptions specified in the regulations, when a registered medical practitioner3 or registered optometrist4 tests the sight5 of another person, it is his duty6: (1) to perform such examinations of the eye for the purpose of detecting injury, disease or abnormality in the eye or elsewhere as the regulations may require7; and (2) immediately following the test, to give the person whose sight he has tested a written8 statement that he has carried out the examinations that the regulations require9, and that he is or, as the case