Acer TravelMate P243-MG User Manual page 12

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Take short rests to relax your neck and shoulders.
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Avoid tensing your muscles or shrugging your shoulders.
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Install the external display, keyboard and mouse properly and within
comfortable reach.
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If you view your monitor more than your documents, place the display at the
center of your desk to minimize neck strain.
Taking care of your vision
Long viewing hours, wearing incorrect glasses or contact lenses, glare, excessive
room lighting, poorly focused screens, very small typefaces and low-contrast
displays could stress your eyes. The following sections provide suggestions on how
to reduce eyestrain.
Eyes
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Rest your eyes frequently.
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Give your eyes regular breaks by looking away from the monitor and focusing
on a distant point.
•
Blink frequently to keep your eyes from drying out.
Display
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Keep your display clean.
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Keep your head at a higher level than the top edge of the display so your eyes
point downward when looking at the middle of the display.
•
Adjust the display brightness and/or contrast to a comfortable level for
enhanced text readability and graphics clarity.
•
Eliminate glare and reflections by:
• placing your display in such a way that the side faces the window or any
light source
• minimizing room light by using drapes, shades or blinds
• using a task light
• changing the display's viewing angle
• using a glare-reduction filter
• using a display visor, such as a piece of cardboard extended from the
display's top front edge
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Avoid adjusting your display to an awkward viewing angle.
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Avoid looking at bright light sources for extended periods of time.