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Keyboard cleaners are an essential accessory that lets you keep your computer-related gadgets free from dust and debris. Does work with visual display units impair visual activities after work? Documenta Ophthal 1992 79:253-9.Finding the Right Keyboard Cleaner: A Buyer’s Guide Eye strain in VDU users: Viewing distance and the resting position of ocular muscles. Meeting the eye care needs of video display terminal operators. The visual display terminal issue: A consideration of its physiological, psychological and clinical background. University of Milan, Italy, Oct 2-5, 1994.Ĭampbell FW, Durden K. Fourth International Scientific Conference Book of Short Papers, vol 2.
How do eye problems rank with other VDU disorders? In: Grieco A, Molteni G, Occhipinti E, Piccoli B, eds. In: Physiology of the eye (Fifth edition). The extraocular muscles and their actions. Louis: American Optometric Association, 1995:1.ĭavison H. Guide to the clinical aspects of computer vision syndrome. Am J Optom Physiol Opt 1988 65:162-7.Īmerican Optometric Association. Optom Vis Sci 1991 68:27-33.ĭain SJ, McCarthy AK, Chan-Ling T. Task variables and visual discomfort associated with the use of VDTs. Hum Factors 1981 23:387-400.Ĭollins MS, Brown B, Bowman KJ, Caird D. An investigation of health complaints and job stress in video display operations. Because of the impact of computer vision syndrome on worker comfort and productivity, we recommend annual eye checkups for all regular users of computers. Many aspects of computer vision syndrome meet the same criteria used to define cumulative trauma disorders or repetitive stress injuries. Aspects of the design of the computer video display such as screen resolution and contrast, image refresh rates and flicker, and screen glare, as well as working distances and angles all may contribute to worker symptoms.(8,9) Working at a computer is more visually demanding than doing other standard office work such as reading printed documents.
The ability of the eyes to change focus is controlled by the ciliary muscle, which exerts a force on the internal lens of the eye.(6) In many respects, many computer related vision problems can be considered a form of musculoskeletal disorder, commonly referred to as cumulative trauma disorder (CTD) or repetitive stress injuries (RSI).(7) The movement of each of the eyes is controlled by six extra-ocular muscles(5) that are responsible for proper alignment of the eyes when viewing objects such as the computer screen. Problems occur when the visual demands of the task exceed the visual abilities of the individual to comfortably perform the task.Įye movements, eye focusing, and eye alignment processes involve repetitious muscular activity. The elements of working at a computer which make it visually demanding include frequent saccadic eye movements (ocular motility) and continuous eye focusing ( accommodation) and alignment (vergence) demands.
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