| Comparison of Blinking Patterns When Watching Ultra-high Definition Television: Normal versus Dry Eyes. |
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Byeong Soo Kang, Min Won Seo, Hee Kyung Yang, Jong Mo Seo, Sanghoon Lee, Jeong Min Hwang |
1Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea. hjm@snu.ac.kr
2Department of Electrical and Computer Engineering, Seoul National University College of Engineering, Seoul, Korea.
3Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea.
4Department of Electrical and Electronic Engineering, Yonsei University College of Engineering, Seoul, Korea. |
| 초고선명 텔레비전 시청 시 정상안과 건성안에서의 눈깜박임 양상 비교 |
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강병수1⋅서민원2⋅양희경1,3⋅서종모1,2⋅이상훈4⋅황정민1,3 |
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서울대학교 의과대학 안과학교실1, 서울대학교 공과대학 전기⋅정보공학부2, 분당서울대학교병원 안과3, 연세대학교 공과대학 전기전자공학부4 |
Correspondence:
Jeong-Min Hwang, MD, PhD
Email: hjm@snu.ac.kr |
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Received: 6 October 2016 • Revised: 7 April 2017 • Accepted: 17 May 2017 |
| Abstract |
PURPOSE
To analyze blinking patterns when watching an ultra-high definition (UHD) television and to compare the results between normal eyes and dry eyes. METHODS: A total of 59 participants aged from 13 to 69 years were instructed to watch a colorful and dynamic video on a UHD television for 10 minutes. Before and after watching the UHD television, we measured the best corrected visual acuities, autorefraction, tear-break-up-time, degree of corneal erosion and conjunctival hyperemia via slit lamp biomicroscopy. In addition, questionnaires for the evaluation of eye fatigue and symptoms of a dry eye were completed. The definition of dry eye syndrome was that the tear-break-up-time of one of the eyes was less than 5 seconds, conjunctival injection, or marked corneal erosion. The number of blinks and the duration of blinking were both measured and analyzed at the early and late phases of video-watching. RESULTS: After watching the UHD television in the normal eye group, the tear-break-up-time was significantly decreased (p < 0.001) and the degree of corneal erosion was significantly increased (p = 0.023). However, the subjective symptoms of participants were not aggravated (p = 0.080). There were no significant differences in blinking patterns in the dry eye group. On the other hand, in the normal eye group, the mean blinking time was significantly increased (p = 0.030). CONCLUSIONS: Watching an UHD television changes the tear-break-up-time, degree of corneal erosion, and blinking pattern in normal eyes, which may increase the risk of dry eye syndrome. |
| Key Words:
Blinking;Dry eye;Ultra-high definition television |
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