Table 2 The mean arithmetic and mean absolute refractive prediction errors (D) using the Barrett Universal II (UII), Haigis, and SRK/T formulas
Parameter | Formula | Mean | SD | Range | Median (25–75%) |
|---|---|---|---|---|---|
CTR group | |||||
PE | Barrett UII | 0.06 | 0.39 | − 1.07 to 1.05 | 0.05 (− 0.15 to − 0.2) |
Haigis | − 0.34 | 0.42 | − 1.64 to 0.75 | − 0.36 (− 0.58 to − 0.09) | |
SRK/T | − 0.31 | 0.46 | − 1.5 to 0.7 | − 0.37 (− 0.55 to − 0.03) | |
AE | Barrett UII | 0.28 | 0.27 | 0.01 to 1.07 | 0.17 (0.09 to 0.29) |
Haigis | 0.41 | 0.35 | 0.01 to 1.64 | 0.41 (0.12 to 0.59) | |
SRK/T | 0.43 | 0.34 | 0.01 to 1.5 | 0.44 (0.15 to 0.55) | |
Control group | |||||
PE | Barrett UII | 0.12 | 0.67 | − 2.03 to 1.29 | 0.18 (− 0.2 to 0.5) |
Haigis | − 0.40 | 0.72 | − 2.58 to 0.91 | − 0.34 (− 0.87 to − 0.07) | |
SRK/T | − 0.38 | 0.82 | − 2.75 to 1.54 | − 0.37 (− 0.78 to − 0.07) | |
AE | Barrett UII | 0.51 | 0.43 | 0.02 to 2.03 | 0.41 (0.2 to 0.68) |
Haigis | 0.58 | 0.57 | 0.02 to 2.58 | 0.42 (0.07 to 0.83) | |
SRK/T | 0.62 | 0.64 | 0.03 to 2.75 | 0.44 (0.16 to 0.83) | |