When you work at a computer for any length of time, it's common to experience eye strain, blurred vision, red eyes and other symptoms of computer vision syndrome (CVS). This is because the visual demands of computer work are unlike those associated with most other activities. These special-purpose glasses are prescribed specifically to reduce eye strain and give you the most comfortable vision possible at your computer.
Computer screens usually are positioned 20 to 26 inches from the user's eyes. This is considered the intermediate zone of vision — closer than driving ("distance") vision, but farther away than reading ("near") vision. Computer glasses put the optimum lens power for viewing your computer screen right where you need it for a clear, wide-field view for maximum viewing comfort, the lenses of your computer glasses should include anti-reflective coating. Sometimes called anti-glare treatment, anti-reflective (AR) coatings eliminate reflections of light from the front and back surfaces of your lenses that can cause eye strain. Some eye doctors recommend adding a light tint to computer glasses to reduce glare caused by harsh overhead lighting and to enhance contrast. Tinted computer lenses also are recommended to block short-wavelength, "blue" light emitted from computer screens that are associated with glare and eye strain. Because an accurate eyeglasses prescription is essential if you want to get the full benefits from computer glasses, it's best to purchase this eyewear from a knowledgeable eye care professional.
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