The importance of 18 features in two methods
| Permutation importance | Impurity-based feature importance | ||
| Feature | Importance | Feature | Importance |
| ICL size | 1.00 | ICL size | 1.00 |
| ACD | 0.64 | ACD | 0.52 |
| Pupil size | 0.51 | Type of ICL | 0.29 |
| ACA | 0.47 | The time after surgery | 0.19 |
| CT | 0.45 | Pupil size | 0.16 |
| AL | 0.44 | WTW | 0.14 |
| The time after surgery | 0.40 | AL | 0.11 |
| K2 value | 0.31 | CT | 0.09 |
| K2 axis | 0.31 | ACA | 0.08 |
| K1 value | 0.31 | K2 value | 0.07 |
| K1 axis | 0.28 | Sphere | 0.07 |
| WTW | 0.27 | K1 value | 0.06 |
| Sphere | 0.26 | Sphere of ICL | 0.04 |
| Sphere of ICL | 0.18 | K2 axis | 0.04 |
| SE of ICL | 0.17 | SE of ICL | 0.02 |
| Type of ICL | 0.13 | K1 axis | 0.02 |
| Cylinder | 0.08 | Cylinder | 0.01 |
| Cylinder of ICL | 0.08 | Cylinder of ICL | 0.0 |
The highest importance aligned to 1.0 and scale the left values accordingly.
ACA, anterior chamber angle; ACD, anterior chamber depth; AL, axial length; CT, corneal thickness; ICL, implantable collamer lens; K1, steepest meridian keratometry; K2, flattest meridian keratometry; SE, spherical equivalent; WTW, white to white.