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Comparison of tear meniscus parameters measured by optical coherence tomography and SMTube value between the lacrimal passage obstruction patients and control subjects. Tear meniscus height (a) and area (b) in patients with lacrimal passage obstruction was significantly greater than that in the control subjects. SMTube value in the patients with lacrimal passage obstruction was also significantly greater than that in the control subjects (c). * p < 0.05. ** p < 0.001.
