"Aching backs, wrist disorders and eye strain are just a few ailments you might suffer if your home office space isn't designed with ergonomics in mind.
Here are some tips to keep your work from being an even bigger pain in the neck and other areas:
* Your desk should be about 26 inches across by 29 1/2 inches off the floor regardless of your height. Adjust the chair to the desk proportions. If the desk is not the proper height, raise it by using 2x4 blocks.
* The keyboard should be even with your seated elbow height.
* A chair that does not provide good posture can lead to lower back pain. If a chair is too high, there can be circulation loss in legs and feet. A good ergonomic chair should adjust for full lumbar support and should be padded.
The chair back should press against the small of your back. Use a pillow if the chair back isn't adjustable. Your feet should rest flat on the floor.
* To ensure a 90-degree angle, the back of the knees should touch the chair's seat.
* Sit between 18 and 28 inches from the computer monitor (use a measuring tape to check). The top of the computer screen should be at eye level (head level over shoulders, not looking up or down)." (Continued via ThirdAge) [Ergonomics Resources]