Table 3.

Correlation analysis for eyes with posterior scars on preoperative optical coherence tomography (OCT) assessment (n=28).

Variable	p value
OCT minimal epithelial thickness (µm)	0.003
OCT central epithelial thickness (µm)	0.89
OCT minimal corneal thickness (µm)	0.03
OCT central corneal thickness (µm)	0.16
Maximal-minimal corneal thickness < 220 (um)	0.006
Trephination diameter (mm)	0.44
Trephination depth (µm)	0.06
Diagnosis other than keratoconus	0.007