Fig. 3

The overall percentage of refractive prediction error within ±0.5 D and ±1.0 D of the included formulae. ASCRS average means average degree from ASCRS calculator; Barrett True-K means Barrett True-K no history; Double-K means Double-K SRK/T; OCT means optical coherence tomography formula; W-K-M means Wang-Koch-Maloney; D means diopter