Fig. 2From: Accuracy of refractive outcomes using standard or total keratometry for intraocular lens power formulas in conventional cataract surgeryStacked histogram comparing the percentage of cases with a given prediction error (PE). Formulas are ranked from high to low percentage of PE within ± 0.50 D. TK, total keratometry; BUII, Barrett universal II; H2, Holladay2Back to article page