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NITFBUT by visit.
Notes: Data are mean ± SD. aP<0.001 for SYSB vs SAL, Mann–Whitney test; bP<0.001 for SYSB versus SAL, unpaired t-test.
Abbreviations: NITFBUT, noninvasive tear film break-up time; SYSB, Systane® Balance; SAL, saline; s, seconds; SD, standard deviation.
