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(A) Tear film breakup time (TBUT), (B) fluorescein staining, and (C) impression cytology grade among glaucoma patients with one (n=39 patients), two (n=10 patients), and three or more (n=30 patients) eye drops instilled per day.
Notes: The boundaries of each box indicate the first and third quartile, the bars 1.5 times the interquartile range, and the line within each box indicates the median. Open circles indicate outliers.
