[Symptoms of asthenopia found in welding workers and its prevention].
D000328:Adult; D001248:Asthenopia / Q000517:prevention & control; D006801:Humans; D007093:Imidazoles / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases; D010919:Placebos; D011795:Surveys and Questionnaires; D014896:Welding
D007093:Imidazoles; D010919:Placebos