Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery

Figure 3

(a) Variable importance for projection (VIP) for different parameters. A value above 0.8 has an impact on the prediction of residual astigmatism; a value above 1.0 has a high impact (VIP = variable importance for projection; eccentricity = eccentricity of the cornea with the topography device; asti_diff = difference vector in corneal astigmatism between the keratometry and the topography in diopters; asti_pre = preoperatively measured corneal astigmatism (keratometry); CRF = corneal response factor; CH = corneal hysteresis; AL = true axial eye length). (b) Bootstrapping method of the PLSR model. It is shown that the model is only valid for the parameter “asti_diff”, which is the difference vector between the topography and the keratometry measurement.

(a)

(b)