xiTips and information for comfortable useComputer users may complain of eyestrain and headaches after prolonged use.Users are also at risk of physical injury after long hours of working in front of acomputer. Long work periods, bad posture, poor work habits, stress,inadequate working conditions, personal health and other factors greatlyincrease the risk of physical injury.Incorrect computer usage may lead to carpal tunnel syndrome, tendonitis,tenosynovitis or other musculoskeletal disorders. The following symptoms mayappear in the hands, wrists, arms, shoulders, neck or back:• numbness, or a burning or tingling sensation• aching, soreness or tenderness• pain, swelling or throbbing• stiffness or tightness• coldness or weaknessIf you have these symptoms, or any other recurring or persistent discomfortand/or pain related to computer use, consult a physician immediately andinform your company's health and safety department.The following section provides tips for more comfortable computer use.Finding your comfort zoneFind your comfort zone by adjusting the viewing angle of the monitor, using afootrest, or raising your sitting height to achieve maximum comfort. Observethe following tips:• refrain from staying too long in one fixed posture• avoid slouching forward and/or leaning backward• stand up and walk around regularly to remove the strain on your legmuscles• take short rests to relax your neck and shoulders• avoid tensing your muscles or shrugging your shoulders• install the external display, keyboard and mouse properly and withincomfortable reach• if you view your monitor more than your documents, place the display atthe center of your desk to minimize neck strainTaking care of your visionLong viewing hours, wearing incorrect glasses or contact lenses, glare, excessiveroom lighting, poorly focused screens, very small typefaces and low-contrastdisplays could stress your eyes. The following sections provide suggestions onhow to reduce eyestrain.
