1. Lin PY, Tsai SY, Cheng CY, Liu JH, Chou P, Hsu WM. Prevalence of dry eye among an elderly Chinese population in Taiwan: the Shihpai Eye Study. Ophthalmology 2003;110:1096-101.
2. McCarty CA, Bansal AK, Livingston PM, Stanislavsky YL, Taylor HR. The epidemiology of dry eye in Melbourne, Australia. Ophthalmology 1998;105:1114-9.
3. Ahn JM, Lee SH, Rim TH, Park RJ, Yang HS, Kim TI, et al. Prevalence of and risk factors associated with dry eye: the Korea National Health and Nutrition Examination Survey 2010-2011. Am J Ophthalmol 2014;158:1205-14.
4. Tan LL, Morgan P, Cai ZQ, Straughan RA. Prevalence of and risk factors for symptomatic dry eye disease in Singapore. Clin Exp Optom 2015;98:45-53.
5. Li J, Zheng K, Deng Z, Zheng J, Ma H, Sun L, et al. Prevalence and risk factors of dry eye disease among a hospital-based population in southeast China. Eye Contact Lens 2015;41:44-50.
6. American Academy of Ophthalmology; Cornea/External Disease Panel. Preferred practice pattern guidelines: dry eye syndrome [Internet]. San Francisco (CA): American Academy of Ophthalmology; 2013 [cited 2013 Sep 21]. Available from:
Http://www.aao.org/ppp.
7. Roh HC, Lee JK, Kim M, Oh JH, Chang MW, Chuck RS, et al. Systemic comorbidities of dry eye syndrome: the Korean National Health and Nutrition Examination Survey V, 2010 to 2012. Cornea 2016;35:187-92.
8. Geiger M. Hold the caffeine, pass the fish. Rev Optom [Internet]. 2003;[cited 2003 Feb 18];140:[about 7 screens]. Available from:
https://www.reviewofoptometry.com
9. Beine S, Verwied SC, Luhrmann PM. Coffee consumption and total body water homeostasis as measured by fluid balance and bioelectrical impedance analysis. Ann Nutr Metab 1997;41:29-36.
10. Osei KA, Ovenseri-Ogbomo G, Kyei S, Ntodie M. The effect of caffeine on tear secretion. Optom Vis Sci 2014;91:171-7.
11. Chia EM, Mitchell P, Rochtchina E, Lee AJ, Maroun R, Wang JJ. Prevalence and associations of dry eye syndrome in an older population: the Blue Mountains Eye Study. Clin Exp Ophthalmol 2003;31:229-32.
12. Moss SE, Klein R, Klein BE. Long-term incidence of dry eye in an older population. Optom Vis Sci 2008;85:668-74.
13. Moss SE, Klein R, Klein BE. Prevalence of and risk factors for dry eye syndrome. Arch Ophthalmol 2000;118:1264-8.
14. Korea Ministry of Food and Drug Safety. Korea food additives code. Seoul: Korea Food Industry Association; 2015.
15. Avisar R, Avisar E, Weinberger D. Effect of coffee consumption on intraocular pressure. Ann Pharmacother 2002;36:992-5.
16. Chandrasekaran S, Rochtchina E, Mitchell P. Effects of caffeine on intraocular pressure: the Blue Mountains Eye Study. J Glaucoma 2005;14:504-7.
17. Lee W, Lim SS, Won JU, Roh J, Lee JH, Seok H, et al. The association between sleep duration and dry eye syndrome among Korean adults. Sleep Med 2015;16:1327-31.
20. Tang YL, Cheng YL, Ren YP, Yu XN, Shentu XC. Metabolic syndrome risk factors and dry eye syndrome: a meta-analysis. Int J Ophthalmol 2016;9:1038-45.
21. Dao AH, Spindle JD, Harp BA, Jacob A, Chuang AZ, Yee RW. Association of dyslipidemia in moderate to severe meibomian gland dysfunction. Am J Ophthalmol 2010;150:371-5.