스마트폰 사용이 시기능에 미치는 영향

• 영문명: Impacts of Smartphone Use on Visual Function
• 발행기관: 대한검안학회
• 저자명: 권지민(Ji Min Kwon) 이수정(Soo Jung Lee)
• 간행물 정보: 『Annals of optometry and contact lens』Vol.18 No.4, 116~120쪽, 전체 5쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2019.12.30

영문 초록

Purpose: To analyze the change of visual function according to use time of smartphone in healthy adults. Methods: The medical records of 40 healthy adults who visited our hospital for eye fatigue, visual disturbance, and eye irritation and had used a smartphone more than 4 hours a day, and who agreed to and cooperated with the smartphone usage time reduction after initial visit were analyzed. Subjective visual fatigue assessed by asthenopia questionnaire was reviewed. Best corrected visual acuity, spherical equivalent, amplitude of accommodation, alignment, stereoacuity, tear film break up time, and contrast sensitivity were reviewed. The use time of smartphone at follow up visit was investigated, and the changes in visual function after the reduction were analyzed. Results: Asthenopia questionnaire score was significantly higher when smartphone usage time was ≥ 4 hours (7.8 ± 5.4) than when it was < 1 hour (3.6 ± 4.4) (p < 0.001). Amplitude of accommodation was significantly lower when smartphone usage time was ≥ 4 hours (10.9 ± 1.2 diopters [D]) than when it was < 1 hour (11.7 ± 1.5 D) (p < 0.001). Tear film break up time was significantly shorter when smartphone usage time was ≥ 4 hours (7.5 ± 1.9 seconds) than when it was < 1 hour (8.4 ± 1.8 seconds) (p < 0.001). There was no significant difference in best corrected visual acuity, spherical equivalent, alignment, stereoacuity, and contrast sensitivity according to smartphone usage time. Conclusions: Long term use of smartphone can significantly increase subjective visual fatigue and reduce amplitude of accommodation and tear film break up time. In modern society where the use of visual display is increasing, close observation and caution regarding use of the video display units, especially smartphones, are needed.

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키워드

Accommodation ocular Asthenopia Smartphone Tears Vision ocular