Table 2.
Mean ± standard deviation of difference, respect to central atrophy values, of distant from atrophy and near atrophy zones for percent perfused choriocapillaris area (%) and retinal sensitivity (dB); p-values derived from linear mixed model between zones.
| Mean Differences ± SD | |||
|---|---|---|---|
| Variable | Near Atrophy–Central Atrophy | Distant from Atrophy–Central Atrophy | p-Value |
| PPCA (%) | |||
| Area 20 × 20 pixels | 8.3 ± 4.3 * | 12.6 ± 1.8 * | <0.001 |
| Area 40 × 40 pixels | 10.0 ± 5.5 * | 14.6 ± 3.4 * | <0.001 |
| Area 50 × 50 pixels | 10.0 ± 5.2 * | 15.0 ± 4.1 * | <0.001 |
| Area 60 × 60 pixels | 10.1 ± 4.9 * | 15.5 ± 4.1 * | <0.001 |
| Retinal Sensitivity (dB) | 14.0 ± 4.9 * | 25.7 ± 1.3 * | <0.001 |
* p < 0.001 after adjustment according to Bonferroni correction for multiple hypotheses testing vs. central atrophy. PPCA: Percent perfused choriocapillaris area.