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2022 Fiscal Year Final Research Report

Effects of mobile phone on vision and autonomic nerve system

Research Project

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Project/Area Number 19K03061
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 09070:Educational technology-related
Research InstitutionInternational University of Health and Welfare

Principal Investigator

Hara Naoto  国際医療福祉大学, 保健医療学部, 教授 (30265699)

Co-Investigator(Kenkyū-buntansha) 鎌田 泰彰  国際医療福祉大学, 保健医療学部, 講師 (20787791)
Project Period (FY) 2019-04-01 – 2023-03-31
Keywords輻湊 / 調節 / 近見反応 / 羞明 / デジタルデバイス / 内斜視 / 適応 / ICT環境
Outline of Final Research Achievements

Visual functions such as the convergence/accommodative system (near response) and autonomic nerve functions due to digital devices and preventive measures against asthenopia (Digital eye strain) were examined. 1) We looked at the difference in viewing distance, the difference between face-to-face and online lectures, and the difference in the effect of display and paper on visual function. Temporary inward deviation of eye position after near work by digital devices. We also verified whether it is effective as a preventive measure against DES by far vision. 3) Blue light, which is the biggest difference between display and paper, has proven to be more of a headache. The influence of the display light source (blue light) was confirmed from the pupillary reaction.

Free Research Field

視覚生理学、神経眼科

Academic Significance and Societal Importance of the Research Achievements

本研究の最大の問いであった、1)デジタル機器の過剰使用は内斜視の原因となるか、2)眼疲労(Digital eye strain, DES)の発症機序と20-20-20Rule(小まめな遠方視)が効果的なDESに対する予防策と成り得ることが分かった。3)デジタル機器のスクリーンから光源が交感神経系を賦活化し頭痛の原因となり得る。
産業衛生学上最大級の被害とも言われるVDT症候群であった。現在のDESは、日常生活上なくてはならないデジタル機器使用に伴って発症することから生活習慣病として位置づけで考えることが重要である。その機序解明と予防法について研究したことには、大きな社会的意義がある。

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Published: 2024-01-30  

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