PURPOSE In the present study, the visual discomfort induced by smart mobile devices was assessed in normal and healthy adults. METHODS Fifty-nine volunteers (age, 38.16 ± 10.23 years; male : female = 19 : 40) were exposed to tablet computer screen stimuli (iPad Air, Apple Inc.) for 1 hour. Participants watched a movie or played a computer game on the tablet computer. Visual fatigue and discom...

In this paper, we propose a quantitative metric of measuring the degree of the visual fatigue in a stereoscopy. To the best of our knowledge, this is the first simplified relative quantitative approach describing visual fatigue value of a stereoscopy. Our experimental result shows that the correlation index of more than 98% is obtained between our Simplified Relative Visual Fatigue (SRVF) model...

The aims of the present study were to develop and validate the Japanese version of the checklist individual strength questionnaire (CIS) which is used to measure prolonged fatigue not only in the general population but also in the working population. We obtained permission to use CIS from its author and translated the questionnaire into Japanese. Then, the Japanese version of the questionnaire ...

The association of anaemia and other predictors of fatigue was studied in cancer patients on palliative treatment. A cohort of 128 consecutive patients (61 men and 67 women, mean age 63.6 years; range 36-85) was interviewed using the Edmonton Symptom Assessment System (ESAS) questionnaire, with 11 items describing cancer-related symptoms in visual analogue scale (VAS). Routine haematological sa...

Industrial lighting covers a wide range of different characteristics of working interiors and work tasks. This study investigated the effects of illumination on visual workload in visual display terminal (VDT) workstation. Ten college students (5 males and 5 females) were recruited as participants to perform VDT signal detection tasks. A randomized block design was utilized with four light colo...

PURPOSE Chronic fatigue syndrome has been associated with decreased function of the hypothalamic-pituitary-adrenal axis. Although neurally mediated hypotension occurs more frequently in patients with chronic fatigue syndrome than in controls, attempts to alleviate symptoms by administration of hydrocortisone or fludrocortisone have not been successful. The purpose of this study was to investiga...

Background: Hospitalization can significantly disrupt sleeping patterns. Insomnia in the hospitalized patient leads to increased fatigue. Aims and Objectives: The aim of this study was to evaluate and compare sleep quality and fatigue of the hospitalized patients and match healthy controls. Methodology: This is a descriptive cross-sectional study. A total of 150 hospitalized patients (internal ...

Symptoms of three-dimensional (3D) sickness, such as intoxication and eye fatigue, have been observed in subjects viewing 3D films and vary according to the image quality and visual environment. In addition, the influence of stereoscopic vision on the incidence of 3D sickness has not been explored sufficiently. Therefore, it is important to examine the safety of viewing virtual 3D content. The ...