CES Office Ergonomics & Computer Workstations

Question 1

What is the recommended distance between the user's eyes and a computer monitor?

Accepted Answer

20–40 inches

Answer

An arm's length distance of approximately 20–40 inches (50–100 cm) reduces eye strain and allows comfortable focal adjustment.

Question 2

Where should the top of a computer monitor be positioned relative to eye level?

Accepted Answer

At or slightly below eye level

Answer

Placing the monitor top at or slightly below eye level allows the eyes to gaze slightly downward, reducing neck extension and eye fatigue.

Question 3

The recommended elbow angle when typing at a keyboard is approximately:

Accepted Answer

90–110°

Answer

Elbows bent at 90–110° with upper arms close to the body and wrists neutral minimizes static shoulder and forearm loading.

Question 4

Which keyboard feature is most effective at reducing ulnar deviation during typing?

Accepted Answer

Split ergonomic design

Answer

Split keyboards angle each half outward, allowing the wrists to remain in a more neutral alignment and reducing ulnar deviation.

Question 5

What is the primary ergonomic benefit of a document holder placed next to a monitor?

Accepted Answer

Minimizes neck rotation and repetitive head movement

Answer

A document holder positioned adjacent to the monitor at the same height and distance prevents repetitive neck rotation between paper and screen.

CES - Certified Ergonomic Specialist Practice Test