Table 5.

Preoperative and postoperative keratometric astigmatism changes.

Parameter	Incision Group				P Value*
	Temporal	Superotemporal	Superonasal	Superior
TCRP4.0
Pre-op Ast. (D)	0.87 ± 0.45	0.99 ± 1.02	0.90 ± 0.62	1.12 ± 0.75	0.177
Post-op Ast. (D)	0.79 ± 0.47	0.94 ± 1.00	0.89 ± 0.59	0.86 ± 0.73	0.145
P value	0.055	0.332	0.621	<0.001
TCRP3.0
Pre-op Ast. (D)	0.88 ± 0.48	0.73 ± 0.63	0.80 ± 0.53	0.89 ± 0.63	0.265
Post-op Ast. (D)	0.79 ± 0.49	0.74 ± 0.48	0.91 ± 0.57	0.80 ± 0.77	0.871
P value	0.281	0.801	0.212	0.110
Sim-KAnt.
Pre-op Ast. (D)	0.76 ± 0.41	0.94 ± 0.83	0.81 ± 0.48	1.10 ± 0.62	0.004
Post-op Ast. (D)	0.60 ± 0.41	0.79 ± 0.68	0.71 ± 0.48	0.92 ± 0.71	0.073
P value	0.095	0.004	0.042	<0.001

TCRP_4.0 = total corneal refractive power at 4.0-mm-zone; TCRP_3.0 = total corneal refractive power at 3.0-mm-zone; Pre-op Ast. = Preoperative astigmatism; Post-op Ast. = Postoperative astigmatism; D = diopters; Sim-K = simulated keratometry; Ant. = anterior corneal curvature.