Skip to main content
. Author manuscript; available in PMC: 2021 Aug 1.
Published in final edited form as: Am J Ophthalmol. 2020 Apr 10;216:132–139. doi: 10.1016/j.ajo.2020.04.006

Figure 1.

Figure 1.

Measurement of corneal epithelial thickness (CET, upper) and maximal limbal epithelial thickness (mLET, lower) by using anterior segment optical coherence tomography (OCT). The center of the cornea and 2 points at 1 mm away from the center of the cornea were located (Upper left). CET was measured at these 3 locations from a point beneath the tear film (first hyperreflective layer) to the basal membrane (second hyperreflective layer). The value of CET in the center of the cornea was OCT-CET1, and the mean of these 3 points was OCT-CET3. “Line a” is perpendicular to the tangent of the limbal surface, which crosses the scleral spur (SS); “line b” is a connecting line between the ending points of Bowman’s layer and Descemet’s membrane. The limbal epithelium area (LEA) is defined by 2 white solid lines (“line a” and “line b”). The thickest part of the LEA was located, and the mLET was measured.