CHAPTER 2: Using Your Computer
8
Working safely
Before using your computer, read the following recommendations for setting up a safe and
comfortable work area and avoiding discomfort and strain.
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 monitor 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 on your monitor.
• Use soft, indirect lighting in your work area. Do not use your computer in a dark room.
• Avoid focusing your eyes on your computer screen for long periods of time. Look away
from your computer occasionally, 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 mouse. If the desk is not adjustable or is too
tall, consider using a keyboard drawer.
• 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.
Top of screen is not
higher than eye level
Feet are flat on the floor
Hands and arms are
parallel to the floor
Screen is perpendicular to
your line of sight
8511879.book Page 8 Thursday, February 15, 2007 10:39 AM
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