eMachines E4264, Справочное руководство, Страница: 19 / 124

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Reducing eye strain
Sunlight or bright indoor lighting should not reflect on the
monitor screen or shine directly into your eyes.
•
Position the computer desk and screen so you can avoid
glare on your screen and light shining directly into your
eyes. Reduce glare by installing shades or curtains on
windows, and by installing a glare screen filter.
•
Use soft, indirect lighting in your work area. Do not use
your computer in a dark room.
•
Set paper holders at the same height and distance as
the monitor.
•
Avoid focusing your eyes on your computer screen for
long periods of time. Every 10 or 15 minutes, look
around the room, and try to focus on distant objects.
Setting up your computer desk and chair
When you are setting up your computer desk and chair, make
sure that the desk is the appropriate height and the chair helps
you maintain good posture.
•
Select a flat surface for your computer desk.
•
Adjust the height of the computer desk so your hands
and arms are positioned parallel to the floor when you
use the keyboard and touchpad. If the desk is not
adjustable or is too tall, consider using an adjustable
chair to control your arm’s height above the keyboard.
•
Use an adjustable chair that is comfortable, distributes
your weight evenly, and keeps your body relaxed.
•
Position your chair so the keyboard is at or slightly
below the level of your elbow. This position lets your
shoulders relax while you type.
•
Adjust the chair height, adjust the forward tilt of the
seat, or use a footrest to distribute your weight evenly
on the chair and relieve pressure on the back of your
thighs.
•
Adjust the back of the chair so it supports the lower
curve of your spine. You can use a pillow or cushion to
provide extra back support.
8512042.book Page 13 Monday, December 18, 2006 10:15 AM