Table 3.

Root mean square value for the higher order corneal aberrations (HOA) in each study group.

	RMS of total trefoil	RMS of total coma	RMS of total spherical	RMS of total tetrafoil	RMS of total higher order astigmatism	HOA RMS
Round	0.0833 ± 0.040	0.145 ± 0.080	0.2509 ± 0.067	0.0713 ± 0.037	0.0533 ± 0.025	0.333 ± 0.061
Oval	0.0782 ± 0.044	0.161 ± 0.058	0.1806 ± 0.065	0.0940 ± 0.032	0.0565 ± 0.038	0.285 ± 0.067
Symmetrical bow tie	0.0886 ± 0.040	0.164 ± 0.092	0.2059 ± 0.066	0.0717 ± 0.031	0.0570 ± 0.034	0.314 ± 0.070
Asymmetrical bow tie	0.0982 ± 0.064	0.363 ± 0.084	0.2138 ± 0.066	0.0901 ± 0.041	0.0540 ± 0.025	0.458 ± 0.078
Irregular	0.1311 ± 0.091	0.223 ± 0.132	0.2929 ± 0.070	0.1135 ± 0.091	0.0815 ± 0.046	0.459 ± 0.106
Total eyes	0.0959 ± 0.061	0.211 ± 0.122	0.2888 ± 0.077	0.0882 ± 0.053	0.0605 ± 0.036	0.3699 ± 0.107