Table 2. Changes in sway power of frequency bands derived from each subsystem according to an increase in induced hyperopia.
| Lens power for hyperopia induction (diopter) | Sway power in each frequency band by Fourier transformation | |||
|---|---|---|---|---|
| Low | Low-to-medium | High-to-medium | High | |
| 0.0 (Full correction) | 23.38 ± 10.53 | 9.26 ± 3.73a | 3.10 ± 1.22 | 0.70 ± 0.97 |
| −1.0 | 23.06 ± 12.60 | 9.35 ± 4.28a | 3.16 ± 1.13 | 0.65 ± 0.75 |
| −2.0 | 23.04 ± 15.97 | 9.49 ± 4.46a | 3.22 ± 1.23 | 0.71 ± 0.98 |
| −3.0 | 22.31 ± 14.72 | 10.10 ± 4.98a | 3.19 ± 1.40 | 0.76 ± 1.22 |
| −4.0 | 23.54 ± 15.45 | 10.58 ± 5.12a | 3.24 ± 1.31 | 0.81 ± 1.26 |
| −5.0 | 22.45 ± 10.75 | 10.28 ± 4.36a | 3.30 ± 1.21 | 0.79 ± 1.23 |
| −6.0 | 26.49 ± 20.21 | 11.31 ± 5.09b | 3.47 ± 1.26 | 0.90 ± 1.66 |
| F/p-value | 0.824/0.558 | 4.981/0.017* | 0.653/0.688 | 0.729/0.628 |
Notes:
Data are expressed as mean ± SD.
*
p < 0.05: significant differences by repeated-measures ANOVA.
a, b
subgroups by LSD (Least significant difference) post-hoc analysis.
n = 51 (for each visual condition).