Lenovo E41-55 User Manual page 50

Head position: Keep your head and neck in a comfortable and neutral (vertical, or upright) position. To
reduce your risk of tiring your eyes by constantly focusing on your screen, look away from your computer at
least every 20 minutes and gaze at a distant object (at least 20 feet away) for at least 20 seconds.
Chair: Use a chair that gives you good back support and seat height adjustment. Use chair adjustments to
best suit your comfort posture.
Arm and hand position: If available, use chair arm rests or an area on your working surface to provide
weight support for your arms. Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal)
position. Type with a soft touch without pounding the keys.
Leg position: Keep your thighs parallel to the floor and your feet flat on the floor or on a footrest.
What if you are traveling?
It might not be possible to observe the best ergonomic practices when you are using your computer while on
the move or in a casual setting. Regardless of the setting, try to observe as many of the tips as possible.
Sitting properly and using adequate lighting, for example, helps you maintain desirable levels of comfort and
performance. If your work area is not in an office setting, ensure to take special note of employing active
sitting and taking work breaks. Many product solutions are available to help you modify and expand your
computer to best suit your needs. You can find some of these options at https://www.lenovo.com/accessories .
Explore your options for docking solutions and external products that provide the adjustability and features
that you want.
Questions about vision?
The visual display screens of notebook computers are designed to meet the highest standards. These visual
display screens provide you with clear, crisp images and large, bright displays that are easy to see, yet easy
on the eyes. Any concentrated and sustained visual activity can be tiring. If you have questions on eye
fatigue or visual discomfort, consult a vision-care specialist for advice.
Low Blue Light (for selected models)
Computer display emits blue light. Blue light, also known as high-energy visible (HEV) light, has the shortest
wavelength of visible light (380nm to 500nm), and therefore produces the highest amount of energy.
Prolonged exposure to a blue light may cause temporary visual fatigue. This computer is shipped from the
factory in low blue light mode, this can help to improve visual fatigue.
Night light (Software solution)
Blue light is the high-energy visible light in the light spectrum. Excessive exposure to blue light might damage
your vision. Night light is a feature that reduces the blue light emitted by computer displays. When the night
light is on, your computer display shows warmer colors that help you reduce eye strain.
To turn on or turn off the night light, type Night light in the Windows search box and then press Enter. Then,
follow the on-screen instructions.
Note: Selected Lenovo computers are low blue-light certified. These computers are tested with night light
turned on and color temperature set to the default value of 48 or greater.
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Lenovo E41–55 User Guide