Table 2.
Control | FECD | |||
---|---|---|---|---|
Anterior | Mild | Moderate | Advanced | |
Total HOAs | 0.47 ± 0.16 | 0.54 ± 0.25+ | 0.61 ± 0.27* | 0.66 ± 0.28* |
Sphere | 0.31 ± 0.11 | 0.29 ± 0.09 | 0.34 ± 0.15 | 0.37 ± 0.15 |
Sphere-like | 0.32 ± 0.11 | 0.29 ± 0.09* | 0.34 ± 0.15 | 0.37 ± 0.15 |
Coma | 0.22 ± 0.17 | 0.26 ± 0.22 | 0.29 ± 0.21 | 0.39 ± 0.30 |
Coma-like | 0.23 ± 0.17 | 0.28 ± 0.21 | 0.30 ± 0.21 | 0.41 ± 0.29 |
Trefoil | 0.10 ± 0.07 | 0.17 ± 0.22 | 0.18 ± 0.13** | 0.11 ± 0.09 |
Trefoil-like | 0.16 ± 0.08 | 0.25 ± 0.23 | 0.29 ± 0.22** | 0.21 ± 0.13 |
Posterior | ||||
Total HOAs | 0.16 ± 0.03 | 0.22 ± 0.09* | 0.22 ± 0.08*** | 0.23 ± 0.09*** |
Sphere | 0.13 ± 0.04 | 0.13 ± 0.05 | 0.13 ± 0.04 | 0.13 ± 0.04 |
Sphere-like | 0.13 ± 0.04 | 0.13 ± 0.05 | 0.13 ± 0.04 | 0.13 ± 0.04 |
Coma | 0.05 ± 0.03 | 0.09 ± 0.08* | 0.09 ± 0.06*** | 0.10 ± 0.07** |
Coma-like | 0.06 ± 0.03 | 0.11 ± 0.08** | 0.10 ± 0.06*** | 0.10 ± 0.06*** |
Trefoil | 0.03 ± 0.02 | 0.06 ± 0.05 | 0.07 ± 0.05*** | 0.09 ± 0.08*** |
Trefoil-like | 0.06 ± 0.03 | 0.09 ± 0.05 | 0.11 ± 0.07*** | 0.12 ± 0.08*** |
High-order aberrations (HOAs) of 3rd through 6th order at 6-mm-diameter optical zone were determined by using Scheimpflug imaging (n =178). Data are unadjusted mean ± standard deviation [RMS, μm].
p < 0.05
p < 0.01
p < 0.001, versus controls (GEE models, age adjusted).
Minimum detectable difference for total anterior HOAs in mild FECD versus control is 0.15 μm (α=0.05, β=0.20).