irritation, headaches, gritty eye sensation, eye fatigue, neck and shoulder pain, color perception change, decreased visual efficiency, more frequent errors and reduced efficiency. (Atencio 1996, Palmer 1993, Nunoo 1997) Eyestrain is also known as asthenopia. It simply means visual strain. (Palmer 1993) Dr. Paul F. Bommarito also said that 88% of heavy computer users experience these problems. (Fletcher 1996) Palmer suggest that eye fatigue is often caused by the eye muscles becoming tired much like
7. Hazard Identification and Risk Assessments Introduction A hazard is defined as an activity or object that has the potential to cause harm if contact is made with the person, object or activity (MHS, 1996; Harmse, 2007; HSE, 2006). These hazards in a work place need to be identified and dealt with accordingly to prevent any harm to employees or any individual acquainted to a certain activity or establishment. The key roles and principles of occupational hygiene are Anticipation, Identification