Ashraf F. Ahmad, MD, of Harvard Eye Associates breaks down what tear breakup time (TBUT) testing measures, why results can vary between exams, and what should happen after a positive screen.
0:06 – What TBUT testing assesses
1:19 – Why TBUT results vary between exams
2:39 – Which practice settings benefit most from TBUT
3:26 – What comes after a positive TBUT screen
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