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Purpose: The purpose of this present study is to determine the effect of single cup of green tea on the tear film stability and the quantity of tears production.
Methodology: A prospective observational study was carried out at the Department of Optometry and vision sciences, The University of Lahore. participants were enrolled in this study. The subjects who had fulfill the inclusion criteria were examined for baseline measurement half an hour before the green tea intake. The tear film stability and the quantity of tears production were accessed by using tear breakup time and schirmer test respectively. After the initial baseline investigation, a cup of green tea was given to the participant and the measurements was taken again after 1 hour of green tea consumption under same examination room at same room temperature.
Results: A normal healthy subjects were enrolled in this study. Out of 30 participant there were females and 12 (40%) of males of age ranges years. The mean age of the patients was . The mean of baseline tear breakup time of right eye was sec and after 1 hour of green tea consumption was 13.06 ± 1.76sec. Similarly, the baseline means value of quantity of tear production of right eye by using scheimer test was and after 1 hour of green tea consumption was . The mean baseline measurement of quantity of tear production (Schirmer test) of left eye before 30 mint green tea consumption was mm and after 1 hour of drinking green tea was mm respectively. Similarly, the stability of tear film (TBUT) was assessed before mint of green tea consumption and after the 1-hour green tea consumption of initial baseline measurement of left eye was sec and 8sec respectively. Paired Sample t test shows a significant association of stability of tear film and tear production after the consumption of green tea.
Conclusions: There was a significant effect of green tea on tear film stability and the quantity of tears production. The quantity of tears production reduced significantly.