Fig. 10From: Influence of posterior corneal astigmatism on postoperative refractive astigmatism in pseudophakic eyes after cataract surgeryDouble-angle plots of difference in vector between postoperative refractive and keratometric astigmatism. The mean vector of the difference (represented by the grey rhombus larger than the other plots) was 0.30 D axis 164° (each ring = 0.5 D, outer ring = 3.0 D)Back to article page