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. 2015 Jul 14;10(7):e0132656. doi: 10.1371/journal.pone.0132656

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© 2015 Kiss, Németh

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 3 — Artificial tear treatment and measurement of TFBUT on 20 patients were performed as described in Methods. Tear-film breakup time (TFBUT) showed a significant elongation after one month of regular use of the artificial tears, the effect did not grow further with the longer treatment both on right and left eyes (shown by filled diamonds/solid line, or open rectangles/dashed line, respectively). Means and their standard deviations of the TFBUT value are shown. Statistical evaluation was performed using the Paired T Test. One and two asterisks note p<0.05 or p<0.01, respectively.