At 6 months postoperatively , the aspheric group had significantly better UDVA ( logMAR 0.04 0.04 [ Snellen 20/16 ] [ range : -0.079 to 0.000 ] ) and lower mean residual spherical error ( +0.10 0.52 diopters [ D ] [ range : -1.12 to 1.25 D ] ) than the wavefront-guided group ( logMAR UDVA 0.00 0.07 [ range : -0.079 to 0.176 ] ; MRSE -0.35 0.47 D [ range : -1.5 to 0.62 D ] ) ( P = .003 and < .001 , respectively ) .