Visual Performance after Bilateral Implantation of a Four-Haptic Diffractive Toric Multifocal Intraocular Lens in High Myopes

Figure 3

Vectorial displays (single-polar plots) for the target induced astigmatism, surgically induced astigmatism, difference vector, and correction index.

(a) Target induced astigmatism vector

(b) Surgically induced astigmatism vector

(c) Difference vector

(d) Correction index