Table 2.

Topographic Parameters of the Keratoconus Group and the Control Group

	Keratoconus Group (n = 94)	Control Group (n = 84)	P Value
AveK (D)
OD	46.15 ± 3.88	44.43 ± 1.93	< 0.001
OS	46.30 ± 4.48	46.30 ± 4.48	< 0.001
Cyl (D)
OD	4.92 ± 6.93	2.96 ± 1.77	0.013
OS	3.35 ± 2.72	2.97 ± 1.66	0.279
SRI
OD	1.03 ± 0.64	0.58 ± 0.37	< 0.001
OS	0.97 ± 0.61	0.65 ± 0.31	< 0.001
SAI
OD	2.32 ± 1.82	1.15 ± 1.02	< 0.001
OS	2.18 ± 1.61	1.14 ± 0.92	< 0.001

AveK, average keratometry; D, diopter; Cyl, cylinder; SRI, surface regularity index; SAI, surface asymmetric index.