Evaluation of Astigmatic Correction Using Vector Analysis after Combined Femtosecond Laser-Assisted Phacoemulsification and Intrastromal Arcuate Keratotomy

Table 4

Detailed values of changes in these parameters measured by the autokeratometer according to the astigmatism axis.

		K Astig
		K Astig (mean, SD)		Δ (mean, SD)
Preop	WTR	1.34, 0.61	0.128
	ATR	1.23, 0.46
	OBL	1.00, 0.30
1 month postop	WTR	1.00, 0.50	0.072	−0.34, 0.57	0.001	0.230
	ATR	0.75, 0.29		−0.48, 0.47	<0.001
	OBL	0.71, 0.33		−0.29, 0.40	0.013
3 months postop	WTR	0.89, 0.47	0.217	−0.45, 0.60	<0.001	0.639
	ATR	0.75, 0.40		−0.48, 0.48	<0.001
	OBL	0.68, 0.46		−0.32, 0.54	0.040

ATR, against-the-rule; WTR, with-the-rule; OBL, oblique astigmatism. ΔChange of corneal astigmatism compared with preoperative data. Wilcoxon signed-rank test (comparison with baseline time point). Kruskal‒Wallis test between subgroups.