Table 1. Mean ± SD value for each parameter in the Keratoconus and Control Groups.

Parameter	Keratoconus Group		Control Group		p
	Better eye	Worse eye	Right eye	Left eye	Between eye †	Between group ††
Kf (D) *	44.90±3.09	47.42±4.58	42.69±1.62	42.92±1.57	<0.001/>0.05	<0.001
Ks (D) *	46.84±4.23	51.33±5.56	43.92±1.67	44.32±1.93	<0.001/>0.05	<0.001
CCT (µm)#	493.73±26.04	463.60±33.53	554.62±26.98	557.31±27.18	<0.001/>0.05	<0.001
ThCT (µm)#	493.53±47.07	453.83±47.59	546.33±30.91	551.82±28.48	<0.001/>0.05	<0.001
PE (µm) *	32.60±29.51	68.00±51.24	6.71±6.42	5.38±6.06	<0.001/>0.05	<0.001

*Worse eye is the eye with the highest value and ^#Worse eye is the eye with the lowest value.

^† Worse eye vs. better eye in the Keratoconus Group/Right eye vs. left eye in the Control Group; Student’s t-test on dependent samples.

^†† Keratoconus vs. Control groups; Student’s t-test on independent samples.

PE: posterior elevation; CCT: central corneal thickness; ThCT: thinnest corneal thickness.