Table 2.

Comparison between postoperative keratometric and aberrometric changes in group I and II

	GROUP I	GROUP II	P value
Postoperative K1(D)	41.6 ± 1.09 (38.9 to 43.5)	41.0 ± 1.6 (38.5 to 43.6)	0.14
Postoperative K2(D)	40.7 ± 1.08 (38.8 to 42.9)	40.26 ± 1.5 (37.8 to 43.2)	0.13
Postoperative Q(4.5 mm)	0.1± 0.2 (−0.5 to 0.4)	0.2 ± 0.1 (−0.1 to 0.5)	0.07
Postoperative total aberrations(μm)	1.19 ± 0.6	1.21 ± 0.4	0.4
Postoperative HOA(μm)	0.44 ± 0.1	0.4 ± 0.1	0.46
Postoperative vertical coma(μm)	0.08 ± 0.5	0.07 ± 0.6	0.68
Postoperative horizontal coma(μm)	0.4 ± 0.6	0.3 ± 0.7	0.27
Postoperative SA(μm)	0.3 ± 0.3	0.4 ± 0.3	0.08

Abbreviations: (k1,k2) the steep and the flat keratometric readings, D diopter, Q corneal asphericity, HOA high order aberrations, μm micron, SA spherical aberrations