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KMID : 1159320220240030275
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Korean Journal of Vision Science
2022 Volume.24 No. 3 p.275 ~ p.285
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The Effect of Particulate Matter on the Tear Film in Korean Youth and Elderly
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Jo Yun-Su
Lee Koon-Ja
Lee Koon-Ja
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Abstract
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Purpose : To evaluate the effect of particulate matter (PM) on the tear film in youth and elderly, the tear volume, stability and lipid layer thickness (LLT) were evaluated based on the level of PM.
Methods : Twenty-five subjects in their 20s and 60s (a total 50 of subjects) without ocular disease were participated and tear film tests were performed on the day of good (0~30 ㎍/m³) and bad (51~100㎍/m³) PM level, provided by the Korea Environment Corporation. Tear volume was evaluated by OCCUTUBE, the stability was evaluated by the BUT and NIBUT, the LLT was measured using Lipiview®, and dry eye symptoms were evaluated using the OSDI questionnaire. The results were analyzed using SPSS based on the level of PM.
Results : The tear volume and stability were significantly decreased on the day of bad PM level in both the young and elderly people compared to the day of good PM level ( <0.050). However, there was no significant difference in the LLT and OSDI scores between the day of good and bad PM level. The tear volume and stability were negatively correlated with PM level, and the correlation coefficients of OCCUTUBE measurement, TBUT and NIBUT of the elderly (r=0.35, <0.001, r=0.47, <0.001, r=0.52, <0.001, and r=0.52, <0.001, respectively) were slightly higher than those of the young subject group (r=0.34, <0.001, r=0.37, <0.001 and r=0.40, p<0.001, respectively).
Conclusion : The PM could act as the causes of dry eye by reducing the amount and stability of the tear in both the young and the elderly.
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KEYWORD
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Dry eye, Particulate matter, Tear stability, Tear volume
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