A field evaluation of monitor placement effects in VDT users

Appropriate visual display terminal (VDT) location is a subject of ongoing debate. Generally, visual strain is associated with higher placement, and m usculoskeletal strain is associated with lower placement. Seeking resolutio n of the debate, this paper provides a comparison of results from previous lab-based monitor placement studies to recommendations and outcomes from vi ewing preference and neutral posture studies. The paper then presents resul ts from a field study that addressed two outstanding issues: Does monitor p lacement in a workplace elicit postures and discomfort responses similar to those seen in laboratory settings? Results showed placements in the workpl ace elicited postures similar to those in lab studies. Additionally, prefer red VDT location generally corresponded to the location in which less neck discomfort was reported, though that trend requires further investigation. Overall, there seems to be consistent evidence to support mid-level or some what higher placement, as a rule-of-thumb, considering preferred gaze angle and musculoskeletal concerns. However, optimal placement may be lower for some individuals or tasks. (C) 2001 Elsevier Science Ltd. All rights reserv ed.