INTRODUCTION The individual and combined effect of occupational noise and vibration exposures, on workers' health has not been thoroughly investigated. In order to find better ways to prevent and manage workers' headache, this study aimed to investigate the effects of occupational noise and vibration exposure on headache/eyestrain. METHODS We used data from the fourth Korean Working Condition...

We propose a new method for measuring the degree of eyestrain on 3D stereoscopic displays using a glasses-type of eye tracking device. Our study is novel in the following four ways: first, the circular area where a user's gaze position exists is defined based on the calculated gaze position and gaze estimation error. Within this circular area, the position where edge strength is maximized can b...

Children of footwear making units are working in the soling process. The process includes fixing of upper part with the sole of the footwear. The adhesives contain a mix of organic solvents, which are released in the working environment and cause irritation and lacrimation of eyes. In addition poor illumination and ventilation further aggravates the eyestrain. The present study was carried out ...

Color and monochromatic liquid crystal displays (LCDs) were compared in terms of eyestrain by using a new method that uses Landolt rings for a visual perceptional test. In this method, the difference of the nearest distances to distinguish Landolt rings between before and after the usage of LCD monitors was used as the index of eyestrain. When the nearest distance for distinguishing Landolt rin...

Twenty-seven observers performed intensive visual search tasks with curved and flat monitors. Based on a 22-item eyestrain questionnaire, fewer subjects reported eyestrain, difficulty-tofocus and blurred-vision symptoms with a curved monitor than with a flat monitor. Fewer subjects had reduced saccade peak speed following the curved monitor use. Author

Four experiments were conducted to test whether recent developments in display technology would suffice to eliminate the well-known disadvantages in reading from screen as compared with paper. Proofreading speed and performance were equal for a TFT-LCD and a paper display, but there were more symptoms of eyestrain in the screen condition accompanied by a strong preference for paper (Experiment ...

Keep an eye out for eye fatigue symptoms Computer-related vision symptoms such as eye fatigue have some common causes that should not be ignored. Visual display Terminals (VDTs) cause symptoms such as eyestrain, visual discomfort, and visual fatigue (Murata et al., 1996). Detecting the likely diagnosis and treating the cause can result in improving performance of the user and lowering the risk ...