Steady-state accommodation response and VDT screen conditions
Steady-state accommodation response was measured for seven different visual display terminal (VDT) screen conditions and a hard-copy control condition. The screen conditions included variations in screen polarity, contrast and chromatic characteristics of the text and background. Accomodation response was measured for seven young subjects using a free-space infrared optometer, the Canon Autoref R-1. The accomodation response was measured every 1.3 s over a period of 60 s for each test condition, and both the mean and standard deviation of the responses were derived. A small but significantly higher accomodation response was found for hard copy, blue-on-red and red-on-blue screen conditions compared with white-on-black, green-on-black and black-on-white screen conditions. Screen polarity and contrast had little effect on accomodation response for the black-and-white screen conditions. The variability of accommodation response showed little difference between test conitions. For short-term VDT screen viewing, the accomodation response appears to be relatively accurate and stable across a wide range of screen conditions.
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|Item Type:||Journal Article|
|Additional Information:||For more information, please refer to the journal’s website (see hypertext link) or contact the author. email@example.com|
|Keywords:||visual display terminal, accomodation, vision, eye|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health|
Current > Institutes > Institute of Health and Biomedical Innovation
|Copyright Owner:||Copyright 1994 Elsevier|
|Deposited On:||21 Mar 2005|
|Last Modified:||15 Jan 2009 16:34|
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