Section 33 of the Principal Act (which relates to certificates of competency) is hereby amended by the insertion after subsection (3) of the following subsection:

"(3A)

(a) Notwithstanding anything contained in subsection (3) of this section, a test under that subsection shall not be carried out save where the issuing authority has satisfied itself in the prescribed manner that the eyesight of the applicant or, in the case of an applicant with a defect of eyesight for the time being corrected, the eyesight of the applicant as so corrected, complies with the prescribed standard.

(b) A person aggrieved by a refusal, in pursuance of paragraph (a) of this subsection, to carry out a test may appeal to a Justice of the District Court having jurisdiction in the place in which the person ordinarily resides, and the Justice may either refuse the appeal or, if satisfied that the eyesight or corrected eyesight of the applicant complies with the prescribed standard, direct the issuing authority to test or cause to be tested the applicant under subsection (3) of this section.

(c) A decision under this subsection of a Justice of the District Court shall be final and not appealable."