Table 4.

Sensitivity, specificity, and area under the curve values identified by cutoff points of different OCT-based corneal thickness parameter sets to differentiate eyes with suspect keratoconus from normal corneas and keratoconus from normal ones.

Pachymetry (μm)	Cutoff value		AUC		Sensitivity (%)		Specificity (%)
	Normal vs. SKC	Normal vs. KC	Normal vs. SKC	Normal vs. KC	Normal vs. SKC	Normal vs. KC	Normal vs. SKC	Normal vs. KC
Min CT (0_2)	≤526	≤478	0.75	0.88	88.37	82.86	57.4	83.6
Avg CT (0_2)	≤535	≤497	0.74	0.85	86.05	82.35	54.1	78.7
Max CT (0_2)	≤557	≤526	0.75	0.8	88.37	76.47	50.8	73.8
Min-Max CT (0_2)	≤−26	≤−32	0.68	0.94	53.49	94.12	86.9	93.4
Min CT (2_5)	≤537	≤493	0.75	0.88	95.35	91.18	50.8	77.1
Avg CT (2_5)	≤581	≤542	0.73	0.78	100	91.18	36.1	60.7
Max CT (2_5)	≤613	≤608	0.72	0.72	90.7	91.18	49.2	50.8
Min-Max CT (2_5)	≤−77	≤−77	0.61	0.89	41.86	91.18	41.9	82
S-I CT (2_5)	>1	>15	0.58	0.77	95.35	90.62	23	59
SN-IT CT (2_5)	>25	>35	0.66	0.83	74.42	78.12	50.8	82
CCT	≤533	≤491	0.76	0.87	86.05	82.35	55.7	83.6

Min = minimum; CT = corneal thickness; Avg = average; Max = maximum; Min-Max = minimum-maximum; S-I = superior-inferior; SN-IT = superonasal-inferotemporal; CCT = central corneal thickness; AUC = area under the receiver operating characteristic curve; SKC = suspect keratoconus; KC = keratoconus.