Medical lasers.
D005131:Eye Injuries / Q000209:etiology*; D006801:Humans; D053685:Laser Therapy; D007834:Lasers / Q000009:adverse effects*; D009784:Occupational Diseases / Q000517:prevention & control*; D011832:Radiation Injuries / Q000209:etiology* / Q000517:prevention & control; D012867:Skin / Q000528:radiation effects