. 2014 Sep 4;8(1):48–55. doi: 10.1016/j.optom.2014.07.007

Table 2.

Comparison of the flattest, steepest and average corneal power and maximum tangential keratometry.

Measurements (D)	Apical-touch				Three-point-touch				Comparison between groups p^b
	Baseline	14 days	Dif.	p^a	Baseline	14 days	Dif.	p^a	Baseline	14 days
Flattest SimK	46.61 ± 3.41	46.31 ± 2.86	0.29	0.030	45.88 ±	45.92 ± 3.23	−0.04	0.190	0.665	0.662
Steepest SimK	50.65 ± 4.24	49.79 ± 3.57	0.77	<0.0001	49.43 ± 3.60	49.13 ± 3.28	0.30	0.010	0.399	0.607
ACP	48.53 ± 3.73	47.98 ± 3.11	0.51	0.003	47.56 ± 3.18	47.46 ± 3.16	0.10	0.227	0.372	0.535
KTag	56.79 ± 4.90	54.56 ± 4.28	1.8	<0.0001	53.68 ± 3.81	52.61 ± 3.37	1.07	0.001	0.026	0.118

Wilcoxon signed rank test.

Mann–Whitney U test. Dif: difference; D: diopters; SimK: simulated keratometry; ACP: average corneal power; KTag: maximum tangential curvature.