Book ChapterDOI
A study of accommodation training by stereoscopic film presentation
Masumi Takada,Akihiro Sugiura,Yasuyuki Matsuura,Masaru Miyao,Hiroki Takada +4 more
- pp 242-251
TLDR
The visual acuity was statistically improved by continuous accommodation training which will promote a ciliary muscle-stretching effect on eyesight and asthenopia of the young.Abstract:
By relaxing the contracted focus-adjustment muscles around the eyeball, such as the ciliary and extraocular muscles, improvement of the pseudo-myopia is expected. This understanding has led to the accommo-dation training in which the visual target is given by stereoscopic video clips. In this study, we verify short-term effects of the accommodation training on eyesight of visual inspection workers (22 females) suffering from eye fatigue and 12 middle-aged persons. In the Measurement 1, the workers were trained in 3 days. Moreover, the middle-aged were investigated on several trials of the eyesight recovering apparatus in the Measurement 2. In the Measurement 3, we verify the effects of the accommodation training on eyesight and asthenopia of the young. The accommodation training is compared with close work on VDTs. As a result, the visual acuity was statistically improved by continuous accommodation training which will promote a ciliary muscle-stretching effect.read more
Citations
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Journal ArticleDOI
Pseudomyopia: A Review
TL;DR: The review has warned that although there is agreement on the assessment and diagnosis of the condition, there is no consensus on its management, and the literature describes a range of treatment.
References
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Journal ArticleDOI
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TL;DR: In this paper, the authors developed a Simulator Sickness Questiomaire (SSQ), derived from the Pensacola Motion Sickness Questionnaire (MSQ) using a series of factor analyses, and illustrates its use in monitoring simulator performance with data from a computerized simulator survey of 3,691 simulator hops.
Journal ArticleDOI
Visual fatigue caused by viewing stereoscopic motion images : Background, theories, and observations
Kazuhiko Ukai,Peter A. Howarth +1 more
TL;DR: The background, theories, and observations on visual stress possibly caused by viewing stereoscopic motion images, including changes in pupillary responses, are reviewed and Evaluation of visual fatigue, particularly in relation to different methods of viewing stereoscope displays is described.
Journal ArticleDOI
Association between duration of daily VDT use and subjective symptoms.
Tetsuya Nakazawa,Yasushi Okubo,Yasushi Suwazono,Etsuko Kobayashi,Shingo Komine,Norihisa Kato,Koji Nogawa +6 more
TL;DR: Duration of daily VDT use was linearly related to the physical symptom score, and was non-linearlyrelated to mental and sleep-related symptom score with a threshold effect of 5 hr/day.
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Motion sickness susceptibility associated with visually induced postural instability and cardiac autonomic responses in healthy subjects
TL;DR: This study supports the hypothesis that postural sway and autonomic responses to moving visual stimuli may be associated with motion sickness susceptibility and investigates the role of cardiac sympathetic and parasympathetic activity in this condition.
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Correlation Between Heart Rate and the Severity of Motion Sickness Caused by Optokinetic Stimulation
TL;DR: The findings suggest that a simple measure of heart rate may be a useful indicator of small changes in the degree of sickness that can be of interest in motion sickness research.