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70 Chapter 4
m Position the monitor to minimize glare and reflections on the screen from overhead lights
and windows. You may want to use a tiltable monitor stand. The stand lets you set the
monitor at the best angle for viewing, helping to reduce or eliminate glare from lighting
sources you can’t move.
Avoiding Fatigue
m Change your seated position, stand up, or stretch whenever you start to feel tired.
Frequent short breaks are helpful in reducing fatigue.
m Use a light touch when typing or using a mouse and keep your hands and fingers relaxed.
m Some computer users may develop discomfort in their hands, wrists, or arms after
intensive work without breaks. If you begin to develop chronic pain or discomfort in your
hands, wrists, or arms, consult a qualified health specialist.
m Allow adequate workspace so that you can use your keyboard and mouse comfortably.
Place papers or other items so you can view them easily while using your computer. A
document stand may make reading papers more comfortable.
m Eye muscles must work harder to focus on nearby objects. Occasionally focus your eyes
on a distant object, and blink often while you work.
m Clean your screen regularly. Keeping the screen clean helps reduce unwanted reflections.
Thighs horizontal
Shoulders relaxed
Screen positioned to avoid
reflected glare
Forearms and hands
in a straight line
Forearms level
or tilted up slightly
Lower back supported
Feet flat on the floor
Top of the screen at or slightly
below eye level (You may need
to adjust the height of your
monitor by placing something
under it or by raising your
work surface.)
Clearance under work surface
45–70 cm (18–28 in.)