Fig. 3From: Comparative analysis of IOL power calculations in postoperative refractive surgery patients: a theoretical surgical model for FS-LASIK and SMILE proceduresFrequency histogram of the prediction error of 6 formulas in the SMILE group. a The BTK formula; b the BTKNH formula; c the Masket formula; d the M-Masket formula; e the Haigis-L formula; f the Shammas-PL formulaBack to article page