Viewing Distance
Lower
Back
Support
Seat
Height
Adjust the monitor so that the top of the screen is at, or slightly below, eye
level. Place the monitor at a comfortable viewing distance, usually 51 to 61
cm (20 to 24 in.), and position it so that you can view it without having to
twist your body.
Glare and lighting
Position the monitor to minimize glare and reflections from overhead lights,
windows, and other light sources. Place the monitor at right angles to
windows and other light sources whenever possible. Reduce overhead
lighting, if necessary, by turning off lights or using lower wattage bulbs. If
you install the monitor near a window, use curtains or blinds to block the
sunlight. You might have to adjust the Brightness and Contrast controls on
the monitor as the room lighting changes throughout the day.
Where it is impossible to avoid reflections or to adjust the lighting, place an
antiglare filter over the screen. However, these filters might affect the
clarity of the image on the screen; try them only after you have exhausted
other methods of reducing glare.
Dust buildup compounds problems associated with glare. Remember to
clean your monitor screen periodically using a soft cloth moistened with a
nonabrasive liquid glass cleaner.
Air circulation
Your computer and monitor produce heat. The computer has a fan that
pulls in fresh air and forces out hot air. The monitor lets hot air escape
through vents. Blocking the air vents can cause overheating, which might
result in a malfunction or damage. Place the computer and monitor so that
nothing blocks the air vents; usually, 51 mm (2 in.) of air space is sufficient.
Also, make sure the vented air is not blowing on someone else.
Chapter 2. Setting up your computer 17
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