Computer Workstations

Computer workstations have special considerations you should be aware of. The monitor and keyboard positions, lighting, and seating are especially important in preventing work-related MSDs ( Muscular System Disorders) and eye discomfort.

Shared workstations should be easily adjustable so the screen and keyboard can be at the proper level. Take a look at some specific workstation design considerations and problems/solutions for computer workstations.

There are five components of proper computer workstation design that you must address to maintain proper posture: the work surface; the keyboard; the pointing device or trackball; the monitor; and the chair.

1. Work Surfaces

• ·         Surface needs to be deep enough to allow proper keyboard positioning and to accommodate a monitor viewing distance of 18-24”.
• ·         Surface needs to be wide enough to accommodate keyboard, mouse, and reference material.
• ·         Surface height (or keyboard height independent of the main surface) should be adjusted for the user or adjustable for multiple users.
• ·         Avoid resting your wrists on a hard or sharp surface (use a wrist rest if necessary).
• ·         Leave enough leg room to allow your legs to move freely.

2. Keyboards

Keyboards should be thin and detachable. Must be positioned low enough to keep wrists straight, shoulders relaxed, and elbows angled between 90 and 120 degrees. (A wrist rest can help you maintain straight wrists.)

Alternative keyboards now on the market provide additional options which may alleviate discomfort.

3. Mouse or Trackball

• ·         Should be within easy reach and at the same height as the keyboard.
• ·         Trackballs may be a better alternative because they eliminate some arm movement required by the mouse.

4. Monitors

• ·         Should be positioned so that the top of the screen is slightly below eye level, for a viewing angle of about 30 degrees.
• ·         The viewing distance should be 18-24”.

5. Chairs

• ·         Should have adjustable back support that presses firmly against your lower back and extends at least up to mid-back.
• ·         Should have an easily adjustable seat height to permit your feet to rest flat on the ground with a knee angle of roughly 90 degrees. (some people might need a foot rest to achieve this angle.)
• ·         Should have a rolling, five-pronged base for stability and to prevent unnecessary twisting.
• ·         Should have adjustable padded arm rests to support the weight of the shoulders and the arm.
• ·         Should have an adjustable seat pan to allow the computer user to work comfortably in a forward or reclined position.