Table 3.
Mean absolute error (MAE) of axial length and refractive vergence intraocular lens (IOL) power formulas.
| Vergence | Formula | PE ± SD | MedAE range | MAE ± SD | Standard errora | 95% Confidence intervala |
|
|---|---|---|---|---|---|---|---|
| Lower limit | Upper limit | ||||||
| Axial Length (D) | HofferQ | −0.71 ± 2.24 | 1.59 0.21 to 5.08 |
1.85 ± 1.42 | 0.26 | 1.34 | 2.35 |
| Holladay I | −0.49 ± 2.14 | 1.27 0.03 to 4.43 |
1.70 ± 1.35 | 0.24 | 1.22 | 2.15 | |
| SRK/T | −0.15 ± 1.95 | 1.23 0.07 to 3.86 |
1.55 ± 1.16 | 0.22 | 1.06 | 1.92 | |
| SRK II | −0.16 ± 1.84 | 1.30 0.01 to 3.82 |
1.48 ± 1.07 | 0.18 | 1.10 | 1.84 | |
| Refractive (D) | Lanchulev | −5.48 ± 3.55 | 5.00 0.33 to 12.72 |
5.48 ± 3.55 | 0.63 | 4.30 | 6.81 |
| Holladay R | −2.85 ± 3.60 | 2.51 0.10 to 10.43 |
3.48 ± 2.97 | 0.53 | 2.51 | 4.56 | |
| Khan | −1.66 ± 3.19 | 2.06 0.03 to 8.37 |
2.72 ± 2.32 | 0.42 | 1.96 | 3.58 | |
| Mackool | −1.59 ± 3.31 | 2.15 0.05 to 8.60 |
2.70 ± 2.46 | 0.45 | 1.91 | 3.66 | |
MAE: Mean absolute error; MedAE: Median absolute error; D: Diopter; a: Bootstrap output; SD: Standard deviation; PE: Prediction error.
P-value less than 0.05 was statistically significant.