Table 4.

Change of VSOTF and Induction of Higher-Order Aberrations as a Function of Decentration

			HOA Induction
PD (mm)	Decentration (μm)	Δlog BCVSOTF	ΔComa RMS	ΔSA RMS	ΔrHOA RMS
3.5	0	0 ± 0	0 ± 0	0 ± 0	0 ± 0
	200	0 ± 0.04	0 ± 0.017	0 ± 0.006	0 ± 0.014
	500	−0.03 ± 0.09	0.004 ± 0.041	−0.001 ± 0.015	−0.001 ± 0.031
	1000	−0.12 ± 0.18	0.039 ± 0.069	0.011 ± 0.025	0.002 ± 0.044
	1500	−0.22 ± 0.21	0.112 ± 0.079	0.015 ± 0.034	0.003 ± 0.058
6.0	0	−0.14 ± 0.19	0.058 ± 0.039	0.270 ± 0.149	0.186 ± 0.042
	200	−0.18 ± 0.17	0.111 ± 0.080	0.275 ± 0.138	0.187 ± 0.041
	500	−0.24 ± 0.18	0.300 ± 0.147	0.295 ± 0.147	0.195 ± 0.047
	1000	−0.29 ± 0.20	0.660 ± 0.289	0.338 ± 0.184	0.223 ± 0.048
	1500	−0.29 ± 0.20	0.932 ± 0.403	0.317 ± 0.188	0.252 ± 0.042

The data are averaged from the 0°, 90°, 180°, and 270° meridian and expressed as mean and standard deviations. The values are normalized to the values for the centered position for a 3.5 mm pupil diameter (PD), i.e. each value reflects the difference to the value obtained from centered position over a 3.5 mm PD. Δx, horizontal decentration; Δy, vertical decentration. log BCVSOTF, visual Strehl ratio based on the optical transfer function, simulated for best correction; coma RMS, RMS of 3rd and 5th order coma terms; SA RMS, RMS of Z₄⁰ and Z₆⁰; rHOA RMS, residual RMS of all noncoma, nonspherical HOA.