نتایج جستجو برای: visual display terminals
تعداد نتایج: 529862 فیلتر نتایج به سال:
Background & objectives: One of the factors affecting the performance of video display terminal users is their mental work load. Since low sleep quality causes fault and decreased accuracy in work, this study aimed to evaluate the relationship between mental work load and sleep quality in video display terminals users. Methods: This descriptive cross-sectional study was performed on 191 video d...
This paper describes an analytical method for predicting whether a video display terminal will appear to flicker given the screen phosphor persistence, refresh frequencies, and other environmental factors such as ambient light level, the distance between the viewer and the display, etc. From the method, one can predict the maximum screen luminance and the minimum refresh frequency that will gen...
BACKGROUND Along with the rapid growth of technology its related tools such as computer, monitors and video display terminals (VDTs) grow as well. Based on the studies, the most common complaint reported is of the VDT users. METHODS This study attempts to design a proper tool to assess the visual fatigue of the VDT users. First draft of the questionnaire was prepared after a thorough study on...
The communication and information technology is creating a variation of change and transform in the entire education system. One of the powerful manifestations of this communication and information technology is the use of computer in training. Computer has much potential in education of exceptional students, especially, for students with visual impairment. By applying the computer and suppleme...
BACKGROUND Visual health surveillance is essential in the protection of workers who use video display terminals (VDT). In Spain, the most used is the Specific Health Surveillance Guide published in 1999 by the Ministry of Health. The increase of the scientific production upon computer related occupational visual hazards and the experience in its applicability during the last decade justify the ...
OBJECTIVES To examine the part played by psychological factors in complaints about visual health reported by banking officers who work at video display terminals (VDTs). METHODS Out of a population of 385 bank workers, a group of 212 subjects without organic visual disturbances (as determined by ophthalmological examination) who share a work environment and job duties was selected. Three ques...
IMPORTANCE There are limited reports on the relationship between mucin 5AC (MUC5AC) concentrations in tears, working hours, and the frequency of ocular symptoms in visual display terminal (VDT) users. This investigation evaluated these relationships among patients with dry eye disease (DED) and individuals serving as controls. OBJECTIVE To determine the relationship between MUC5AC concentrati...
OBJECTIVES To clarify the relation between the prevalence of dry eye syndrome and subjective symptoms of asthenopia in visual display terminal (VDT) operators. METHOD 722 VDT workers (242 subject workers with symptoms of asthenopia and 480 controls without such symptoms) without obvious organic ocular diseases received an ophthalmological examination consisting of refractometry and a tear fun...
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