Table 1.

Pre- and postoperative keratometric measurements

	Preoperative	Postoperative	Difference		Percent of Change	P-value*
			Mean	95% CI
IOL-Master	45.95 ± 1.23	38.03 ± 0.68	7.92	7.63 to 8.21	17.2	<0.001
Manual	46.32 ± 1.18	43.15 ± 1.13	3.16	2.81 to 3.51	6.8	<0.001
P-value*	<0.001	<0.001
Sphere	−4.14 ± 1.30	0.08 ± 0.33	−4.22	−4.51 to −3.93	102.5	<0.001
Cylinder	−0.79 ± 0.38	0.30 ± 0.42	−1.09	−1.25 to −0.93	140.6	<0.001
SE	−4.53 ± 1.30	0.23 ± 0.44	−4.76	−5.07 to −4.45	105.6	<0.001
SE at corneal plane	−4.28 ± 1.16	0.23 ± 0.44	−4.51	−4.78 to −4.24	106	<0.001

CI, confidence interval; SE, spherical equivalent

^*Wilcoxon Signed rank test.