Insights into atypical segmental layer thicknesses and phase retardation in thick corneas using ultrahigh-resolution polarization-sensitive optical coherence tomography.

In the central 2 mm zone, the median epithelial thickness for healthy thick corneas was 52.49 μm (range, 50.36 to 54.22 μm), while for KC corneas it was 50.62 μm (range, 44.74 to 52.66 μm). Surprisingly, the difference between the two groups was marginally insignificant ( P = 0.08).

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