Due to the rapid spread of computers, people have heavy visual load that causes modern disease such as Asthenopia and VDT (Visual display terminal) syndrome, and it becomes one of the social issues.
In this study, we paid attention to a pupillary light response test as a simple and objective testing method for eye strain and have examined whether the ocular indices of the test can represent the degree of eye strain or not by conducting a subject experiment, in which a VDT task was given to the subjects and their pupillary light response were measured.
As the result, it was found that the ocular indices of pupillary light response are effective to estimate the eye strain.