Miki Uchino1, Motoko Kawashima1, Yuichi Uchino1, Kazuo Tsubota1, Norihiko Yokoi2. 1. Department of Ophthalmology, Keio University School of Medicine, Tokyo 160-8582, Japan. 2. Department of Ophthalmology, Kyoto Prefectural University School of Medicine, Kyoto 602-8566, Japan.
Abstract
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.
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.
Entities:
Keywords:
blink interval; dry eye disease; tear film break up time; visual display terminal use
Authors: Vicente Martín-Montañez; Alberto López-de la Rosa; Alberto López-Miguel; José Pinto-Fraga; José M González-Méijome; María J González-García Journal: Cont Lens Anterior Eye Date: 2015-01-30 Impact factor: 3.077
Authors: Tristan Bourcier; M Carmen Acosta; Vincent Borderie; Fernando Borrás; Juana Gallar; Thierry Bury; Laurent Laroche; Carlos Belmonte Journal: Invest Ophthalmol Vis Sci Date: 2005-07 Impact factor: 4.799
Authors: Feisal A Adatia; Adi Michaeli-Cohen; Joel Naor; Barbara Caffery; Arthur Bookman; Allan Slomovic Journal: Can J Ophthalmol Date: 2004-12 Impact factor: 1.882
Authors: Isabela Yang; Tais Wakamatsu; Isabella Batistela Inhesta Sacho; José Henrique Fazzi; Asafe César de Aquino; Gabriel Ayub; Pedro Albuquerque Rebello; José Álvaro Pereira Gomes; Monica Alves Journal: PLoS One Date: 2021-11-11 Impact factor: 3.240