Table 3.

Effects of Interaction between LOAs and HOAs on Treatment Effects as a Function of Decentration

		Difference between 2nd-Order and VSOTF-Based Refraction Change (D)
PD (mm)	Decentration (μm)	M	J0	J45
3.5	0	0.05 ± 0.11	−0.05 ± 0.07	−0.02 ± 0.06
	200	0.03 ± 0.26	−0.04 ± 0.09	−0.01 ± 0.07
	500	0.01 ± 0.37	−0.02 ± 0.08	0.03 ± 0.09
	1000	0.03 ± 0.39	−0.02 ± 0.13	0.04 ± 0.10
	1500	0.13 ± 0.43	−0.02 ± 0.11	0.02 ± 0.05
6.0	0	0.68 ± 0.31	−0.18 ± 0.14	0.03 ± 0.06
	200	0.61 ± 0.45	−0.16 ± 0.17	0.04 ± 0.08
	500	0.63 ± 0.28	−0.10 ± 0.23	0.00 ± 0.09
	1000	0.58 ± 0.53	−0.06 ± 0.13	−0.01 ± 0.12
	1500	0.560.65	−0.16 ± 0.37	0.01 ± 0.15

The data are averaged from the 0°, 90°, 180°, and 270° meridian and expressed as mean and SD of the difference between second-order and VSOTF-based dioptric power vectors M, J0, and J45. Differences were not statistically significant. VSOTF refraction, simulated endpoint of the subjective refraction based on the BCVSOTF; M, spherical equivalent; J0, 0°/90° astigmatic component; J45, 45°/135° astigmatic component.