東邦大学学術リポジトリ 東邦大学
ホーム お問い合わせ ログイン
| ホーム ニュース |

Language

検索

     詳細検索

インデックスツリー


詳細



閲覧数:188
ID 20574502
アイテムタイプ Article
このアイテムを表示する
本文 TohoJMed002003086.pdf
Type : application/pdf Download
Size : 791.7 KB
Last updated : Nov 25, 2016
Downloads : 115

Total downloads since Nov 25, 2016 : 115
タイトル Use of an Eyeglass-Type Measuring Device to Assess Exposure of the Eye to Light Among Urban Office Workers
著者
Norihito, Eto
Department of Biomedical Engineering, School of Engineering, Tokai University
[役割]Author
Kyoko, Okada
Department of Biomedical Engineering, School of Engineering, Tokai University
[役割]Author
Akira, Obana
Department of Ophthalmology, Seirei Hamamatsu General Hospital / Department of Medical Spectroscopy, Applied Medical Photonics Laboratory, Medical Photonics Research Center, Hamamatsu University School of Medicine
[役割]Author
Shigetoshi, Okazaki
Department of Medical Spectroscopy, Applied Medical Photonics Laboratory, Medical Photonics Research Center, Hamamatsu University School of Medicine
[役割]Author
Yuji, Nishiwaki
Division of Environmental and Occupational Health, Department of Social Medicine, School of Medicine, Faculty of Medicine, Toho University
[役割]Author
出版地 Tokyo
出版者 The Medical Society of Toho University
上位タイトル
Toho Journal of Medicine (Toho Journal of Medicine). Vol.2, No.3  (2016. 09) ,p.86- 94
識別番号
ISSN
21891990
JaLCDOI info:doi/10.14994/tohojmed.2016.010
抄録 Background: Exposure of the eye to light (EEL) has various adverse effects. High-illuminance blue light causes acute disorders of the retina and is a suspected cause of age-related maculopathy. Nighttime blue-light exposure suppresses internal secretion of melatonin, which can cause various conditions. We developed and used an eyeglass-type measuring device (Ray Sensing Glass System: RaySeG) to measure EEL levels during working hours among urban office workers, who constitute a high percentage of the workforce in Japan. Methods: Time-dependent changes in the individual EEL levels of 39 office workers (classified as sales and deskwork groups) in Tokyo were recorded during working hours for a period of 5 days, after which mean EEL irradiance (mEEL, μW/cm2) values for the total waveband and individual wavelength bands were estimated. The intergroup ratio of average mEEL values in the sales and deskwork groups was calculated. mEEL was divided into quartiles to evaluate differences among individuals. The ratios in each quartile were calculated, and the lowest quartile served as reference. Results: The intergroup mEEL ratios were 4.59 (total), 4.86 (red), 4.18 (green), 4.60 (blue), and 26.5 (ultraviolet). Total mEEL for the two groups was 229 μW/cm2 (sales group) and 50.0 μW/cm2 (deskwork group). The ratio in the highest quartile of total wavebands was 2.95 in the sales group and 2.22 in the deskwork group. Conclusions: mEEL levels depend strongly on individual behavior, and interindividual differences were large for both outdoor lighting conditions and relatively homogeneous indoor lighting environments.
キーワード
exposure assessment
blue light
ultraviolet radiation
visible light
eye
注記 Original Article
言語
eng
資源タイプ TOHO University Scholarly Publication
ジャンル Journal Article
著者版フラグ publisher
アクセス条件 東邦大学医学会
Index
/ Public / Toho Journal of Medicine / Vol.2 / No.3(p.73-105)
関連アイテム


RIKENThe XooNIps Project