Fourier-Domain Optical Coherence Tomography for Monitoring the Lower Tear Meniscus in Dry Eye after Acupuncture Treatment

Figure 1

Definition of the tear meniscus parameters. (a) The result of image acquisition by FD-OCT and the measurement of tear meniscus by FD-OCT. The single line scanning mode was selected (scanning line length: 3 mm; scanning direction: 90°–270°). (b) The TMH was the straight-line distance between the upper extreme and the lower extreme of the tear boundary line, whereas TMD was the vertical distance of the interfacing point of the cornea with the lower eyelid to the tear height line. (c) The TMA was the area of the triangle formed by the corneal anterior boundary, anterior boundary of the lower eyelid, and anterior borderline of the tear meniscus.

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