Figure 3.

Loadings plot of the partial least squares regression discriminant analysis model to compare the three astigmatism treatment methods.

Abbreviations: bSE, spherical equivalent (before treatment); aSE, spherical equivalent (after treatment); bUCVA, uncorrected visual acuity (before treatment); aUCVA, uncorrected visual acuity (after treatment); bBCVA, best corrected visual acuity (before treatment); aBCVA, best corrected visual acuity (after treatment); TIA, target induced astigmatism; TIA_AxDeg, target induced astigmatism axis in degrees; SIA, surgically-induced astigmatism; SIA AxDeg, surgically-induced astigmatism axis in degrees; DV, difference vector; AngEr, angle of error; MagErr, magnitude of error; CI, correction index; IOS, index of success; CA, coefficient of adjustment; FI, flattening index; Wc, W represents X-weights and c represents Y-weights.