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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Prog Lipid Res. 2011 Mar 31;50(3):278–301. doi: 10.1016/j.plipres.2011.03.003

Figure 2.

Figure 2

Measuring of tear film breakup time using fluorescein staining and a slit lamp.

Panel A: uniform staining of the tear film after a blink.

Panel B: irregular staining developed as the result of tear film deterioration caused by non-blinking