Eye problems and visual display terminals--the facts and the fallacies

1998 ◽  
Vol 18 (2) ◽  
pp. 111-119 ◽  
Author(s):  
W Thomson
Keyword(s):  
Visual Display ◽  
Eye Problems

Wearing of Spectacles and Occurrence of Ocular Symptoms in Close Work in Different Occupations

1987 ◽  
Vol 15 (2) ◽  
pp. 99-103 ◽  
Author(s):  
O. Pärssinen ◽  
J. Kirjonen ◽  
K. M. Saari
Keyword(s):  
Age Groups ◽  
Visual Display ◽  
Older Age ◽  
Age Group ◽  
Industrial Workers ◽  
Old People ◽  
Near Vision ◽  
Ocular Symptoms ◽  
Eye Problems ◽  
Younger Age

To study the wearing of spectacles in different occupations we sent a questionnaire to all 26- and 46-year-old people (altogether 3 337 subjects) in the Jyväskylä district. 69% in the older age group and 42% in the younger age group had spectacles. Women wore spectacles more often than men. There was a correlation between the use of spectacles and accurate occupational close work. The proportion of those wearing spectacles was highest in subjects working, at least partly, with Visual Display Units (VDU). Farmers, industrial workers and service personnel wore spectacles less often than those in other occupations. In the older age group 70% and in the younger age group 11% of the subjects considered that they do not have good near vision without spectacles. Of those who used spectacles, 90% in the older and 52% in the younger age group reported that their near vision is better with spectacles than without them. In both age groups there was a positive correlation between the use of spectacles and the duration of daily close work. Subjective ocular symptoms occurred equally in different close work categories in the younger age group. In the older age group, those doing VDU work and reading and writing work had less symptoms of eye problems than those in other job categories.

The Effects of Visual Displays in Attenuating Discrepancies Between Self-Reported and Physiological Indexes of Stress

2020 ◽  
pp. 1-5
Author(s):  
Jenny J. W. Liu ◽  
Julia Gervasio ◽  
Kenneth Fung ◽  
Kristin Vickers
Keyword(s):  
Social Stress ◽  
Visual Display ◽  
Physiological Measures ◽  
Response Strategies ◽  
Subjective Evaluations ◽  
Stress Task ◽  
Physiological Indexes ◽  
Physiological Outcomes ◽  
Physiological Markers ◽  
The Relationship

Abstract. This study examined whether the relationship between subjective and physiological outcomes of stress, and the responsivity to stressors, are affected by whether participants can see a visual display of their physiological output. Participants were randomly assigned to have a visible view of their physiological output readings, or to a condition in which physiological output readings were out of view. Participants individually completed a 30-min laboratory study including the modified Trier Social Stress Task. Both physiological markers of stress (heart rate and blood pressure) and subjective evaluations of stress (visual analog scale) were measured. Results found little congruency across subjective and physiological measures of stress. The visible visual display condition had elevated physiological arousal, while no group differences were observed in self-reported stress. Findings from the study provide insight into the use of visual physiological displays and hold practical implications for both the measurement of stress in research, and the development of wearable technologies without accompanying response strategies.

Redundancy in coding of a visual display as assessed by a signal detection paradigm

1982 ◽  
Author(s):  
Lawrence J. Najjar ◽  
Michael J. Patterson ◽  
Gregory M. Corso
Keyword(s):  
Signal Detection ◽  
Visual Display

A visual display aid for planning rover traversals

1992 ◽  
Author(s):  
HERBERT BERNARD ◽  
STEPHEN ELLIS
Keyword(s):  
Visual Display

Study on Knowledge and Prevalence of Computer Vision Syndrome among Computer Operators in Nobel Medical College Teaching Hospital, Biratnagar, Nepal

2020 ◽  
Vol 9 (2) ◽  
pp. 45-49
Author(s):  
Pramod Sharma Gautam ◽  
Uday Chandra Prakash ◽  
Subreena Dangol
Keyword(s):  
Computer Vision ◽  
Teaching Hospital ◽  
Human Life ◽  
College Teaching ◽  
Extended Period ◽  
Visual Display ◽  
Work Place ◽  
Medical College ◽  
Computer Vision Syndrome ◽  
Department Of Ophthalmology

Background: The eye and vision related problems that results from continuous use of computers and other visual display terminals for extended period of time leads to computer vision syndrome. Due to rapid digitalization in human life, the risk of developing it has also increased in many folds. So, with an aim of determining the prevalence and level of awareness of computer vision syndrome among computer users along with their attitude and practices to prevent it, this study was conducted in the office employees who use computer for a considerable period of time. Materials and Methods: A hospital based observational descriptive study was conducted in the out-patient department of Ophthalmology in Nobel Medical College and Teaching Hospital, Biratnagar, where 105 employees working in different work stations of same institution were enrolled. A questionnaire and the clinical findings were used to collect data. Results: About 80% of the employees were using computer for about (8-11) hours per day. Prevalence of computer vision syndrome noted was (92.4%) with low level of knowledge (85.7%) about it. About 45% of them wore glasses for their refractive errors but attitude and practices in work place to prevent the bad effects of using visual display terminals were found to be lacking (53.3%). Burning sensation in the eye, headache, ocular irritation and itching and neck, shoulder or back pain were the common symptoms. Around (60-70)% of the eyes tested positive for dry eye. Conclusion: Lack of awareness of computer vision syndrome and lack of personal protective measures were associated with its high level of prevalence.  

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