Association between tear film break up time and blink interval in visual display terminal users
AIM: To investigate the association between tear film break up time (TBUT) and blinking interval in visual display terminal (VDT) users. METHODS: Nine hundred and thirty VDT users underwent dry eye testing, and functional visual acuity (FVA) test. The blinking interval during FVA was compared with...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2018-10-01
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| Series: | International Journal of Ophthalmology |
| Subjects: | |
| Online Access: | http://www.ijo.cn/en_publish/2018/10/20181018.pdf |
| _version_ | 1819116552201437184 |
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| author | Miki Uchino Motoko Kawashima Yuichi Uchino Kazuo Tsubota Norihiko Yokoi |
| author_facet | Miki Uchino Motoko Kawashima Yuichi Uchino Kazuo Tsubota Norihiko Yokoi |
| author_sort | Miki Uchino |
| collection | DOAJ |
| description | AIM: To investigate the association between tear film break up time (TBUT) and blinking interval in visual display terminal (VDT) users.
METHODS: Nine hundred and thirty VDT users underwent dry eye testing, and functional visual acuity (FVA) test. The blinking interval during FVA was compared with TBUT. Subjects with longer blinking interval than TBUT were considered as unstable tear film. Logistic regression analysis revealed the risk factors for unstable tear group.
RESULTS: Among 930 workers, 858 subjects (92.3%) participated in this study. Almost 80% of the subjects were categorized into the unstable tear group. Unstable tear group has significantly lower Schirmer values and TBUT (17.5±11.6 vs 21.1±11.5 mm, 3.7±2.6 vs 5.7±2.7s, both P<0.001). There were no significant differences in epithelial staining or severity of symptoms. Logistic regression showed that over 40y was a risk for being unstable tear group [odds ratio (OR)=1.53; 95% confidence interval (CI)=1.06-2.20]. Contact lens use was protective factor for being in the unstable tear group (OR=0.37; 95%CI= 0.26-0.53).
CONCLUSION: Subjects with shorter TBUT than blinking interval are prevalent among VDT users. Subjects over the age of 40 shows an increased risk for unstable tear film. |
| first_indexed | 2024-12-22T05:18:54Z |
| format | Article |
| id | doaj.art-b93bdc107cc740f0abb6daf88a05c097 |
| institution | Directory Open Access Journal |
| issn | 2222-3959 2227-4898 |
| language | English |
| last_indexed | 2024-12-22T05:18:54Z |
| publishDate | 2018-10-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | International Journal of Ophthalmology |
| spelling | doaj.art-b93bdc107cc740f0abb6daf88a05c0972022-12-21T18:37:46ZengPress of International Journal of Ophthalmology (IJO PRESS)International Journal of Ophthalmology2222-39592227-48982018-10-01111016911639710.18240/ijo.2018.10.18Association between tear film break up time and blink interval in visual display terminal usersMiki Uchino0Motoko Kawashima1Yuichi Uchino2Kazuo Tsubota3Norihiko Yokoi4Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, JapanDepartment of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, JapanDepartment of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, JapanDepartment of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, JapanDepartment of Ophthalmology, Kyoto Prefectural University School of Medicine, Kyoto 602-8566, JapanAIM: To investigate the association between tear film break up time (TBUT) and blinking interval in visual display terminal (VDT) users. METHODS: Nine hundred and thirty VDT users underwent dry eye testing, and functional visual acuity (FVA) test. The blinking interval during FVA was compared with TBUT. Subjects with longer blinking interval than TBUT were considered as unstable tear film. Logistic regression analysis revealed the risk factors for unstable tear group. RESULTS: Among 930 workers, 858 subjects (92.3%) participated in this study. Almost 80% of the subjects were categorized into the unstable tear group. Unstable tear group has significantly lower Schirmer values and TBUT (17.5±11.6 vs 21.1±11.5 mm, 3.7±2.6 vs 5.7±2.7s, both P<0.001). There were no significant differences in epithelial staining or severity of symptoms. Logistic regression showed that over 40y was a risk for being unstable tear group [odds ratio (OR)=1.53; 95% confidence interval (CI)=1.06-2.20]. Contact lens use was protective factor for being in the unstable tear group (OR=0.37; 95%CI= 0.26-0.53). CONCLUSION: Subjects with shorter TBUT than blinking interval are prevalent among VDT users. Subjects over the age of 40 shows an increased risk for unstable tear film.http://www.ijo.cn/en_publish/2018/10/20181018.pdfdry eye diseaseblink intervaltear film break up timevisual display terminal use |
| spellingShingle | Miki Uchino Motoko Kawashima Yuichi Uchino Kazuo Tsubota Norihiko Yokoi Association between tear film break up time and blink interval in visual display terminal users International Journal of Ophthalmology dry eye disease blink interval tear film break up time visual display terminal use |
| title | Association between tear film break up time and blink interval in visual display terminal users |
| title_full | Association between tear film break up time and blink interval in visual display terminal users |
| title_fullStr | Association between tear film break up time and blink interval in visual display terminal users |
| title_full_unstemmed | Association between tear film break up time and blink interval in visual display terminal users |
| title_short | Association between tear film break up time and blink interval in visual display terminal users |
| title_sort | association between tear film break up time and blink interval in visual display terminal users |
| topic | dry eye disease blink interval tear film break up time visual display terminal use |
| url | http://www.ijo.cn/en_publish/2018/10/20181018.pdf |
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