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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Eye Contact Lens. 2012 Sep;38(5):282–287. doi: 10.1097/ICL.0b013e31825fed57

Figure 3. Daytime variations in tear meniscus volume.

Figure 3

Both the average total tear meniscus volume (A) and the average lower tear meniscus volume (B) of the dry eye group were significantly less than respective volumes of the normal group at 2:30 PM. In addition, significant differences between the lower tear meniscus volumes of the two groups were apparent at 12:30 PM. (C) There were no significant between-group differences in the mean upper tear meniscus volumes at any time point. TTMV, total tear meniscus volume; LTMV, lower tear meniscus volume; UTMV, upper tear meniscus volume. * indicates P < 0.05 in comparison to the dry eye group. Bars indicate 95% confidence intervals.