screen and the bright surroundings. You can use window blinds,
shades, or drapes to control the amount of daylight in the room
or reduce overhead lighting by turning off or dimming the
lights.
Here is a simple way you can test your lighting. While looking at
the screen, use your hand-to shield your eyes from the brightest
light source in the room (such as a window or overhead light). If
you feel a sense of relief, no matter how small, your current
lighting is too bright.
Using the Keyboard and Mouse
Constant use of a keyboard, mouse, or any
pointing device can lead to a variety of aches
and strains. To prevent injury, keep your hands relaxed and rest
them frequently.
Try to keep your fingers parallel with your forearms to prevent
straining your wrists. Adjust the angle of the keyboard so the
slope is no more than 25 degrees. (The keyboard has legs on the
bottom which allow you to adjust the angle.)
Keep your hands and fingers relaxed when you are typing and
try not to press the keys too hard; using too much force creates
tension in your hands. Remove your hands from the keyboard
when you are not using it and take frequent breaks to stretch
your hands and fingers.
When using a mouse, keep your wrist and fingers relaxed. Let
go of the mouse frequently and stretch or relax your hand. Leave
enough space on your work surface so you can freely move the
mouse.
2-4 Using
Your
Computer
