http://www.office-ergo.com/12things/htm). The key also is to move around and not to sit in one position for extended periods of time.Additionally, there are many computer users who complain with visual discomfort. “Specialists like James Sheedy at the VDT Eye Clinic at the University of Berkeley School of Optometry believe that computer users can develop repetitive strain injury of the eye, and the governmental agency NIOSH estimates that over 60 million Americans suffer from computer eyestrain.” (http://www.ergonomics.ucla.edu/Ergowebv.2/articles/rsianatomy.htm). Eyestrain can cause headaches as well as many other problems. “Eyestrain and headaches are the most common complaints associated with vision. Other problems include double or blurred vision, burning and dry sensations, ocular fatigue, loss of focus, and other visual disturbances. Neck and back pain can also be related to viewing the computer keyboard and/or screen. Although no permanent eye damage has been attributed to computer use, comfortable vision is important to maintain.” (http:www.ergonomics.ucla.edu/Ergowebv.2/articles/rsianatomy.htm). One may wonder if there is a difference in printed material or computer material and the answer is yes. “Printed material is characterized by smooth, dense, black lines with edges that are well defined. Eyes focus to printed material differently than characters on the computer screen because the characters on the computer screen fade out around the edges. The characters are the brightest in the middle and then fade out, so the eyes have difficulty focusing on them. Instead the eyes focus to a further point called the RPA or the resting point of accomodation and then the eye muscles must flex to get the images on the screen focused. The eyes end up being overworked and this can result in eyestrain.” (http://www.ergonomics.ucla.edu/Ergowebv2.0/articles/compvision.htm). If someone has any eye discomfo...
