Working at a computer is more visually demanding than reading printed documents. Such work requires frequent saccadic eye movements andimposes continuous focusing and alignment demands, all ofwhich involve repetitious muscular activity. As with musculoskeletal disorders resultingfrom repetitive motion, computer users experience problems when the visual demands ofthe task exceed their ability to comfortably perform that task.
Eye problems caused by computer use fall under the heading computer vision syndrome (CVS). It isn’t one specific problem. Instead, it includes a whole range of eye strain and pain. Research shows that between 50% and 90% of people who work at a computer screen have at least some symptoms.
The major contributors to CVS is thought to bethe dry eye, the visual effects of video displayterminals (VDT) such as lighting, glare, displayquality, refresh rates and radiation and positioningof computer monitors.
Children have more access to computers eitherat home or at schools now. Parents also encouragechildren at very early years to use the computers.It is believed that heavy computer uses amongchildren put them at the risk of getting early myopia.
It is multidirectional because different people havedifferent complaints. Treatment needs oculartherapy as well as workplace adjustments.
- When regular breaks are given work, efficiencyimproves. This has been proved by studies. Shortfrequent breaks are recommended. A quick walkat the break (around the office) will give astretching to the fatigued muscles. It provides thechange of focus of the eye and relaxation. It isbelieved that looking away at a distance at leasttwice an hour is sufficient for prevention of visualfatigue.
- Symptoms caused by dry eyes can be relieved bylubricating drops. Over-the-counter tearsubstitutes are available at pharmacies. It can beused periodically to rewet the ocular surface. Ithelps in maintaining the balance of salts and aciditytoo, while working with the computer. It isimportant to find the proper lubricating drop forthe computer user. Higher viscosity of lubricantsreduces the visual acuity.