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External monitor
If you sometimes use an external monitor, these suggestions may
be helpful.
n If possible, arrange the monitor so the top of the screen is at
or slightly below your eye level while you’re working. The best
distance from your eyes to the screen is up to you, although
most people seem to prefer 18 to 28 inches (45 to 70 cm).
n Position the monitor to minimize glare and reflections from
lights and windows. You may want to use a monitor stand so
you can adjust the viewing angle.
General suggestions
n Wherever you’re working, take a moment to think about
whether you feel comfortable, and change position if
necessary.
n Occasionally rest your eyes. From time to time focus your eyes
on a distant object, and blink often while you work.
n Some computer users may develop discomfort in their arms,
wrists, or hands if they do intensive work without breaks. If
you begin to develop chronic pain or discomfort in your arms,
wrists, or hands, consult your health specialist.
Chapter 1: Setting Up Your Macintosh PowerBook 29