Table 4.

Corneal HOAs in the first postoperative year (at 6-mm pupil)

Pupil diameter: 6 mm	Preop (mean±SD)	Postop (mean±SD)	Z	P
Corneal HOA RMS (µm)	0.42±0.11	0.53±0.19	−5.04	<.001*
Corneal coma (µm)	0.22±0.10	0.28±0.16	−2.67	0.007*
Corneal trefoil (µm)	0.19±0.11	0.23±0.16	−2.38	0.003*
Corneal spherical (µm)	0.22±0.07	0.28±0.16	−3.65	0.002*

HOA RMS=Root-mean-square of high-order aberration; *Significance at the 0.01 level via Wilcoxon test