Comparison of Blinking Patterns When Watching Ultra-high Definition Television: Normal versus Dry Eyes.
10.3341/jkos.2017.58.6.706
- Author:
Byeong Soo KANG
1
;
Min Won SEO
;
Hee Kyung YANG
;
Jong Mo SEO
;
Sanghoon LEE
;
Jeong Min HWANG
Author Information
1. Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea. hjm@snu.ac.kr
- Publication Type:Original Article
- Keywords:
Blinking;
Dry eye;
Ultra-high definition television
- MeSH:
Asthenopia;
Blinking*;
Dry Eye Syndromes;
Hand;
Hyperemia;
Slit Lamp;
Television*;
Visual Acuity
- From:Journal of the Korean Ophthalmological Society
2017;58(6):706-711
- CountryRepublic of Korea
- Language:Korean
-
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.
