Diurnal variations in tear film break-up time determined in healthy subjects by software-assisted interpretation of tear film video recordings

摘要

Background: This study was designed to examine diurnal variations in tear film break-up time (BUT) and maximumblink interval (MBI) and to assess two different ways of calculating these variables on video recordings of the BUT test interpreted with the help of especially designed software. The repeatability of interpreting BUT video recordings was also addressed.