Korean J Fam Pract 2019; 9(5): 479-482  https://doi.org/10.21215/kjfp.2019.9.5.479
Relationship between Coffee Consumption and Dry Eye Syndrome in Korean Adults: 2010–2011 Korean National Health and Nutrition Examination Survey
Jin Yi Jeong1, Young Je Choi2,*, Su Young Jahng1, Sung Hwa Lee1, Hye Won Kim1, Hyo Rim Son1
1Department of Family Medicine, Gwangju Veterans Hospital, Gwangju; 2Deptartement of Ophthalmology, Gangjin Medical Center, Gangjin, Korea
Young Je Choi
Tel: +82-61-430-1116, Fax: +82-61-434-4736
E-mail: cyj22222@gmail.com
ORCID: http://orcid.org/0000-0001-5895-0824
Received: July 20, 2018; Revised: April 18, 2019; Accepted: May 20, 2019; Published online: October 20, 2019.
© The Korean Academy of Family Medicine. All rights reserved.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background: Dry eye is a common disease, and coffee is a popular beverage that is heavily consumed in Korea and worldwide. We examined the correlation between coffee consumption and dry eye.
Methods: This study was performed using data from the 5th Korean National Health and Nutrition Examination Survey, which was a cross-sectional study of the Korean population conducted from 24 months. We included adults aged ≥19 years who underwent ophthalmologic examination and excluded those who had comorbid conditions with dry eye. The subjects were divided into dry eye and control groups. The dry eye group consisted of those who had been clinically diagnosed with dry eye. A multiple logistic regression analysis was conducted to determine the correlation between coffee consumption and dry eye.
Results: An inverse correlation was found between coffee consumption and dry eye in the group that consumed 3 cups of coffee a day (P=0.001). However, after multivariate adjustment, the statistical significance of the correlation disappeared (P=0.283).
Conclusion: Consumption of 3 cups of coffee a day in comparison to non-consumption group was negatively correlated with dry eye in an univariate analysis model, but the correlation was not statistically significant after adjusting for age, sex, body mass index, smoking, binge drinking, sun exposure time and history of eye surgery.
Keywords: Coffee Consumption; Dry Eye Syndrome; Korean National Health and Nutrition Examination Survey
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