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. 2021 Jun 9;23:101133. doi: 10.1016/j.ajoc.2021.101133

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© 2021 The Authors. Published by Elsevier Inc.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 3 — Corneal epithelial thickness (CET) and corneal thickness without CET in horizontal scan on anterior segment optical coherence tomography

Measurement of corneal epithelial thicknesses using anterior segment optical coherence tomography (AS-OCT) was performed with the software cursors at the central cornea and at 1mm, 2mm, and 3mm points nasally and temporally. Corneal epithelial thicknesses (CET), which are shown under the cornea, were measured manually as the distances (μm) between the air-tear and the epithelium-Bowman's layer interfaces. Corneal thicknesses without CET, which are shown in the bottom of CET, was also measured manually as the distances (μm) between epithelium- Bowman's layer and endothelium layer interfaces.

Case1: At baseline with pinhole visual acuity (VA) of 20/20 and 20/25 (OD/OS), CET and corneal thickness without CET at baseline in OU were shown (A and B). On Day 42 with pinhole VA of 20/70 and 20/50 (OD/OS), thicken CET except at the central cornea was shown in OU (C and D). On Day 82 with pinhole VA of 20/50 and 20/40 (OD/OS), no thickening of CET at any point on day 82 was shown in OU (E and F). No change of corneal thickness without CET were shown in the time course in OU (A,B,C,D,E, and F).

Case2: At baseline with pinhole VA of 20/40 and 20/30 (OD/OS), CET and corneal thickness without CET in OU were shown (G and H). On Day 41 with pinhole VA of 20/60 and 20/40 (OD/OS), thicken CET was shown in OD (I) but no change of CET was shown in OS (J). No change of corneal thickness without CET were shown in the time course in OU (G,H,I, and J).