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KMID : 0371019970300030599
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Journal of Preventive Medicine and Public Health
1997 Volume.30 No. 3 p.599 ~ p.608
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Change on Lens Accommodation and Pupil Light Reflex in VDT works
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Kim Eun-A
Kim Yang-Ho
Jin Young-Woo
Chae Chang-Ho
Choi Yong-Hyu
Moon Young-Hahn
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Abstract
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We studied on change of lens accommodation and pupil light reflex caused by VDT work in six women and compared them with those of other office works. The results were as follows.
1. In VDT work the accommodation contraction velocity decreased 2-hr VDT task, then recovered markedly by the end of the one-hour decreased again by the end of the 2nd 2-hr VDT task. Changes of rel showed similar pattern although it was less typical than that of contra´i
2. There was no marked change in accommodation contraction velj tude of accommodation in general office work and near-distance off the near-distance office work accommodation relaxation velocity decd to work load without recovery after lunch break.
3. Initial pupil diameter, initial pupil area of light reflex decreased ing VDT task only in VDT work and didn´t recover after lunch break.
These results suggest possibility that changes of accommodation ocity, accommodation relaxation velocity, near point distance, and pui area are useful in evaluating characteristics of VDT work. For this adjusted individual differences, circadian rhythm, emotional stress nee,
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KEYWORD
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Accommodation velocity, Pupil light reflex, VDT works, Near point distance, amplitude of accommodation
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