Annals of Occupational and Environmental Medicine

Jong Seok Lee

2 Articles

Prevalence of Dry Eye Syndrome after a Three-Year Exposure to a Clean Room: Hyun A Cho, Jae Jung Cheon, Jong Seok Lee, Soo Young Kim, Seong Sil Chang; Ann Occup Environ Med 2014;26:26-26. Published online September 3, 2014; DOI: https://doi.org/10.1186/s40557-014-0026-z

Objective

To measure the prevalence of dry eye syndrome (DES) among clean room (relative humidity ≤1%) workers from 2011 to 2013.

Methods

Three annual DES examinations were performed completely in 352 clean room workers aged 20–40 years who were working at a secondary battery factory. Each examination comprised the tear-film break-up test (TFBUT), Schirmer’s test I, slit-lamp microscopic examination, and McMonnies questionnaire. DES grades were measured using the Delphi approach. The annual examination results were analyzed using a general linear model and post-hoc analysis with repeated-ANOVA (Tukey). Multiple logistic regression was performed using the examination results from 2013 (dependent variable) to analyze the effect of years spent working in the clean room (independent variable).

Results

The prevalence of DES among these workers was 14.8% in 2011, 27.1% in 2012, and 32.8% in 2013. The TFBUT and McMonnies questionnaire showed that DES grades worsened over time. Multiple logistic regression analysis indicated that the odds ratio for having dry eyes was 1.130 (95% CI 1.012–1.262) according to the findings of the McMonnies questionnaire.

Conclusions

This 3-year trend suggests that the increased prevalence of DES was associated with longer working hours. To decrease the prevalence of DES, employees should be assigned reasonable working hours with shift assignments that include appropriate break times. Workers should also wear protective eyewear, subdivide their working process to minimize exposure, and utilize preservative-free eye drops.

Citations

Citations to this article as recorded by

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Impact of Dry Eye Disease on Work Productivity Among Saudi Workers in Saudi Arabia
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Clinical Ophthalmology.2021; Volume 15: 2675. CrossRef
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Effect of Moisture Chamber Spectacles on Tear Functions in Dry Eye Disease
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Journal of Ophthalmology.2016; 2016: 1. CrossRef

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An Association between Working Schedules and Depression in Public Sector Employees: Hyeon Taek Heo, Dong Won Kim, Jong Seok Lee, Hyeon A Jo, Seong Sil Jang, Soo Young Kim, In Ah Kim; Korean Journal of Occupational and Environmental Medicine 2012;24(4):347-355. Published online December 31, 2012; DOI: https://doi.org/10.35371/kjoem.2012.24.4.347

Abstract PDF

OBJECTIVES
This study determined the work schedules of public project workers who work an irregular shift and assessed the effect of these schedules on depression.
METHODS
Study subjects were 2934 laborers who are members of seven labor unions. Each was given a questionnaire requesting basic personal information, habits, socioeconomic status, and work schedules. Information gathered on work schedules included daytime, nighttime, and weekend work hours. Depression was evaluated using the Beck Depression Inventory (BDI), with Laborers who checked "not depressed" and "slightly depressive" categorized to a low-risk group, whereas laborers who checked "depressed" and "severely depressed" were categorized to a high-risk group. We used the Chi-square test and multivariate logistic regression to examine associations between work schedules and depression.
RESULTS
Laborers on an irregular work schedule averaged 47.8 hours/week and laborers who working over 48 hours/week comprised over half (54.5%) of the total population. Laborers performing night work, Sunday work, and Saturday work more than once in a month made up 25.7%, 30.8% and 33.5% of the examined population, respectively. A high-risk for depression was identified in 10.4% of laborers. Using logistic regression, depression was statistically associated with working : over 10 hours a day (OR=1.63, 95% CI 1.10~2.43), night work (OR=2.20, 95% CI 1.46~3.32), Sunday work (OR=1.81, 95% CI 1.15~2.85) and Saturday work (OR=1.82 95% CI 1.18~2.82).
CONCLUSION
A significant number of laborers with irregular working shifts work long hours and on weekends. Depression was significantly associated with this type of work schedule.

Citations

Citations to this article as recorded by

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Health status and related factors in farmers by SF-12
Kyungeun Park, Sooyong Roh, Jihoon Lee, Soon Chan Kwon, Mihye Jeong, Soo-jin Lee
Annals of Occupational and Environmental Medicine.2015;[Epub] CrossRef
Factors Associated with Depression among Workers by Socio-economic Factors, Health Behaviors, and Characteristics of Work Environment
Hyunkyung Lee, Minsung Sohn, Mankyu Choi
Korean Journal of Health Education and Promotion.2013; 30(5): 125. CrossRef

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