Apple LC520 Especificaciones descargar pdf (Pagina 14)

RSIs did not suddenly arise when computers were invented;

tennis elbow and writer’s cramp, for example, are two RSIs that

have been with us for a long time. Although less common than

other RSIs, one serious RSI discussed more often today is a wrist

problem called carpal tunnel syndrome, which may be aggravated

by improper use of computer keyboards. This nerve disorder

results from excessive pressure on the median nerve as it passes

through the wrist to the hand.

This section offers advice on setting up your work area to

enhance your comfort while you use your computer. Since the

effects of repetitive movements associated with using a computer

can be compounded by those of other work and leisure activities

to produce or aggravate physical problems, proper use of your

computer system must be considered as just one element of a

healthy lifestyle.

No one, of course, can guarantee that you won’t have problems

even when you follow the most expert advice on using computer

equipment. You should always check with a qualified health

specialist if muscle, joint, or eye problems occur.

Eye fatigue

Eye fatigue can occur whenever the eyes are focused on a nearby

object for a long time. This problem occurs because the eye

muscles must work harder to view an object that’s closer than

about 20 feet (6 meters). Improper lighting can hasten the

development of eye fatigue. Although eye fatigue is annoying,

there’s no evidence that it leads to permanent damage.

Whenever you’re engaged in an activity that involves close-up

work—such as reading a magazine, doing craft work, or using a

computer—be sure to have sufficient glare-free lighting and give

your eyes frequent rest breaks by looking up and focusing on

distant objects. Remember to have your eyes examined regularly.

To prevent discomfort and eye fatigue:

n Arrange your work space so that the furniture is properly

adjusted for you and doesn’t contribute to an awkward

working posture.

n Take frequent short breaks to give your muscles and eyes a

chance to rest.

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Apple LC520 Especificaciones Pagina 14