Abstract


In this study, the authors aim at developing eye strain detection method in order to prevent from asthenopia caused by VDT work. A subject experiment was conducted to reveal the relationship between the eye strain and ocular indices. In the experiment, a ”searching number task” was given to the subjects and CFF, pupil light reaction, smooth pursuit, task performance and subjective symptom were measured using Flicker measurement system, Eye-Sensing Display, task software and questionnaire. As the result of the experiment, it was found that the changes of pupil contraction rate, contraction velocity and dilation velocity at the pupil light reaction were related to the eye strain.

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(C) 2020 Hirotake Ishii