Table 1.

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.