アブストラクト（33巻2号：The Bulletin of Kanagawa Dental College）

The Bulletin of Kanagawa Dental College

English

Title　： The Effect of Cellular Phone Use on Pupillary Reaction in Young Adults
Subtitle　： Selective Proceedings of 39th General Meeting of Kanagawa Odontological Society, 2004
Authors　： Naoto Hara1), Hitoshi Uchiyama2), Koji Ohno1), Kazuo Mukuno1)
Authors（kana）　：
Organization　： 1)Department of Ophthalmology, Kanagawa Dental College, Yokohama Clinic, 2)Department of Child Neurology, Tottori University Faculty of Medicine
Journal　： The Bulletin of Kanagawa Dental College
Volume　： 33
Number　： 2
Page　： 93-96
Year/Month　： 2005 / 9
Article　： Report
Publisher　： Kanagawa Odontological Society
Abstract　： [ABSTRACT] The aim of this study was to investigate the effect of cellular phone work on pupillary diameter and pupillary oscillation (PO) in young adults. Before and after near stimuli, mail input work using a cellular phone performed for 20 minutes, pupillary diameter and PO values on near and far viewing were recorded with infrared video pupillography in 19 healthy young adults between 19 and 24 years old (mean 20.8+-1.6). For PO, the frequency characteristics of spectrum powers ingredient were analyzed using a fast Fourier transform. Visual fatigue was determined by questionnaire following the input work. Subjects were subsequently divided two groups according to the presence (PVF) or absence (AVF) of visual fatigue. Of 19 subjects, 8 were included in the PVF group and 11 in the AVF group. 1) Pupils in the PVF group became significantry larger on far viewing after input work (before and after input work VS 3.74+-0.77mm and 4.50+-0.46mm, P<0.05). 2) PO values increased significantly form 0.52+-0.57x10-5 before work to 2.30+-1.40x10-5 after work at a frequency lower than 0.05 Hz (P<0.05). 3) Neither pupillary size nor PO values in the AVF group changed before or after input work (4.09+-0.98mm VS 400+-0.74mm and 2.68+-3.08x10-5 VS 2.23+-2.59x10-5). The PO seems related to visual fatigue. Therefore, visual fatigue sensitivity may have an effect on the nature of pupil reaction.
Practice　： Dentistry
Keywords　： pupil, fatigue, fast Fourier transform, cellular phone, near work