Video Displays, Work, and Vision (1983) / Chapter Skim
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10. Research Needs
10. Research Needs
Pages 214-218
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From page 214... ...
EFFECTS OF DISPLAYS ON VISUAL ACTIVITY Objective Correlates of Visual Complaints A programmatic research effort should be oriented toward relating objective measures of visual activity to subjective complaints of ocular discomfort and visual difficulties. Much of the diff~culty in conducting or evaluating such research stems from the poor definition of 'visual fatigue" and the lack of established correlations among measures of ocular discomfort, visual performance, and physiological variables.
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From page 215... ...
Useful optical measures of image quality have been defined by several investigators (see Chapter 4~. It is extremely important that such research be conducted using longitudinal designs and that workers should be studied while spending considerable time performing meaningful, realistic tasks that might induce visual symptoms.
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From page 216... ...
Here, too, research should be conducted using realistic task conditions and long enough viewing times to induce symptoms. Distinguishing Specific Effects of VDTs Visual complaints and symptoms should be examined as a function of work time for various segments of the working population.
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From page 217... ...
The nonspecific aspects have clearer empirical links to mental and physical wellbeing than does the use of VDTse Consequently, we suggest that higher priority be given to studies of parameters such as workload, social supped Id task complexity that affect ~ icbs' not lust those involving VDTs.
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