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An example of tear thinning and breakup matching a relatively thick strip of lipid between the slanting arrows. Time interval between (A) and (B) was 12.6 seconds. Thinning from divergent tangential flow was small (see text) so most of the dimming in the fluorescence image (e.g., at square in [B]) was due to evaporation. Healthy tear film, 26-year-old white male.
