Ergonomics and the operating microscope.
D003116:Color; D003867:Depth Perception; D006804:Ergonomics; D005221:Fatigue / Q000517:prevention & control; D006801:Humans; D007858:Learning; D008027:Light; D008866:Microsurgery / Q000295:instrumentation / Q000379:methods* / Q000592:standards; D011187:Posture; D014202:Tremor / Q000517:prevention & control; D014785:Vision, Ocular