Reliability of a new modified tear breakup time method: dry tear breakup time

Background null Tear breakup time (TBUT) is a useful technique for diagnosing dry eye disease (DED). The conventional method of measuring TBUT using fluorescein strips adds supplemental normal saline (NS) to the tear film (wet tear breakup time, WBUT) but does not represent the actual state of the tear film. We introduced a new TBUT method-dry tear breakup time (DBUT)-and investigated its reliability. null Methods null We included DED patients...