한국안광학회지 (Journal of Korean Ophthalmic Optics Society)

한국안광학회 (The Korean Ophthalmic Optics Society)
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스마트폰 사용에 따른 20대 성인의 조절기능 변화

Changes in Accommodative Function of Young Adults in their Twenties following Smartphone Use

  • 박미정 (서울과학기술대학교 안경광학과) ;
  • 안영주 (서울과학기술대학교 안경광학과) ;
  • 김수정 (서울과학기술대학교 안경광학과) ;
  • 유지영 (서울과학기술대학교 안경광학과) ;
  • 박경은 (서울과학기술대학교 안경광학과) ;
  • 김소라 (서울과학기술대학교 안경광학과)
  • Park, Mijung (Dept. of Optometry, Seoul National University of Science and Technology) ;
  • Ahn, Young Joo (Dept. of Optometry, Seoul National University of Science and Technology) ;
  • Kim, Soo Jung (Dept. of Optometry, Seoul National University of Science and Technology) ;
  • You, Jiyoung (Dept. of Optometry, Seoul National University of Science and Technology) ;
  • Park, Kyung Eun (Dept. of Optometry, Seoul National University of Science and Technology) ;
  • Kim, So Ra (Dept. of Optometry, Seoul National University of Science and Technology)
  • 투고 : 2014.05.12
  • 심사 : 2014.06.18
  • 발행 : 2014.06.30
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초록

목적: 본 연구에서는스마트폰을 이용한 근거리 작업 시 조절 기능의 변화가 유도되는가를 알아보고자 하였다. 방법: 20대의 총 63명 (남성 26명, 여성 37명)을 대상으로 조절 기능과 교정 전 등가구면도수를 측정하여 대조군 값으로 하였다. 실내조명 아래에서 연구대상자들에게 30분 동안 책을 읽게 한 후 30분간의 휴식 시간을 가지게 하고 순차적으로 동일한 시간 동안 스마트폰으로 영화를 보게 하거나 작업순서에 따른 오차를 배제하기 위하여 반대의 순서로 영화보기와 책읽기를 하게 하였다. 연구대상자들의 조절기능은 1) 최대조절력, 2) 조절 용이성, 3) 양성 및 음성상대조절, 4) 조절 래그 및 교정하지 않은 등가구면도수를 각 작업 후에 다시 검사하고 대조군 값과 비교하였다. 결과: 단안 최대조절력은 독서 후와 비교하여 스마트폰 시청 후 유의하게 감소하였다. 단안 및 양안 조절용이성은 독서나 스마트폰 사용 후 모두 감소하는 경향을 보였으나 통계적으로 유의한 차이는 아니었으며, 양성상대조절값은 독서나 스마트폰 사용 후 모두 유의한 변화가 없었다. 스마트폰 사용 후 음성상대조절 값은 독서 후와는 달리 거의 변화가 없었다. 스마트폰 사용 후 조절래그 값은 독서 후의 경우보다 유의하게 높았다. 결론: 30분 동안의 스마트폰을 사용한 근거리 작업은 일부 조절기능의 변화를 유발하였으며, 그 변화는 동일한 작업 환경에서의 독서 시 보다 유의하게 컸다.

Purpose: The present study was conducted to investigate whether near work with smartphone could induce the change of accommodative function. Methods: Total 63 subjects(26 male and 37 female) in their 20s were firstly examined their visual functions related to accommodation and uncorrected spherical equivalent power as the control. After that, the subjects were asked to read a book for 30 min and sequentially watch a movie on smartphone for the same time after 30 min-break under the indoor light or as it was in the reverse order to avoid time-ordered effect. Their accommodative functions, 1) accommodative amplitude, 2) accommodative facility, 3) relative positive/negative accommodation, and 4) accommodative lag and their uncorrected spherical equivalent power were examined again following each task and compared with the control values. Results: The monocular accommodative amplitude was significantly decreased after smartphone watching compared with it after reading. The monocular and binocular accommodative facilities were tended to reduce after smartphone watching and book reading but were not significantly different. Neither significant change in positive relative accommodation was determined after smartphone watching nor book reading. Negative relative accommodation after smartphone watching was almost unchanged unlike reading a book. The accommodative lag after smartphone work was significantly higher than after book reading. Conclusions: The near work with a smartphone for 30 min induced the change of some accommodative functions, which was significantly greater than when reading under the same working environment.

키워드

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피인용 문헌

  1. The Functional Change of Accommodation and Convergence in the Mid-Forties by Using Smartphone vol.21, pp.2, 2016, https://doi.org/10.14479/jkoos.2016.21.2.127
  2. Changes in Heterophoria and Fusional Vergence after Near Work with Smartphone and Paper Book vol.21, pp.4, 2016, https://doi.org/10.14479/jkoos.2016.21.4.385
  3. The Change of Accommodative Function of Vergence Anomalies Subjects in their Twenties after Near Work with Smartphone vol.22, pp.1, 2017, https://doi.org/10.14479/jkoos.2017.22.1.71
  4. The Changes in Convergence Function of Accommodative Anomalies in their Twenties after Watching Video on a Smartphone vol.22, pp.2, 2017, https://doi.org/10.14479/jkoos.2017.22.2.133
  5. Changes in Accommodative Function after Reading with Paper Book and E-book on Tablet PC vol.22, pp.2, 2017, https://doi.org/10.14479/jkoos.2017.22.2.183
  6. Effect of Application Type on Fatigue and Visual Function in Viewing Virtual Reality(VR) Device of Google Cardboard Type vol.22, pp.3, 2017, https://doi.org/10.14479/jkoos.2017.22.3.221
  7. Correlation of Subjective Symptom and Reading Speed after Reading Paper Book and E-book Using Tablet PC vol.23, pp.2, 2018, https://doi.org/10.14479/jkoos.2018.23.2.151
  8. The Change of Convergence Function of Convergence Insufficiency in Their Twenties after Doing Near Work Using a Smartphone vol.23, pp.1, 2018, https://doi.org/10.14479/jkoos.2018.23.1.47
  9. The Comparison of Accommodative Response and Accommodative Lag Among Different Luminance of Near Visual Media vol.23, pp.4, 2018, https://doi.org/10.14479/jkoos.2018.23.4.407
  10. Effect of Blue Light-Blocking Lens on Accommodative Function during Near Work with Different Background Colors using a Smart Device vol.23, pp.4, 2018, https://doi.org/10.14479/jkoos.2018.23.4.441
  11. Ocular and visual discomfort associated with smartphones, tablets and computers: what we do and do not know pp.08164622, 2019, https://doi.org/10.1111/cxo.12851
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