Table 2.
Distribution of the prediction error (difference between attempted and achieved spherical equivalent) in eyes with short and long AL using SRK/T formula and ultrasound biometry
| Range of SE(D) | Short Eyes | Long Eyes | ||
|---|---|---|---|---|
| n | % | n | % | |
| Within ±0.25 D | 10 | 26.32 | 14 | 22.58 |
| Within ±0.50 D | 22 | 57.89 | 31 | 50.00 |
| Within ±1.0 D | 36 | 94.74 | 44 | 70.97 |
| > + 1.0 D (more hyperopic than predicted) | 1 | 2.63 | 3 | 4.84 |
| ≥ + 2.0 | 0 | 0.00 | 2 | 3.23 |
| <-1.0 D (more myopic than predicted) | 1 | 2.63 | 18 | 29.03 |
| ≤ − 2.0 D | 0 | 0.00 | 3 | 4.84 |
SE spherical equivalent, n number of operated eyes