Fig. 3From: Application of the suture needle retrograde threading method in scleral fixation of intraocular lensesLearning curve analysis of the SNRT method. A, B Threading time curves and CUSUM curves for surgeon A using the SNRT method. C, D Threading time curves and CUSUM curves for surgeon B using the SNRT method. E, F Threading time curves and CUSUM curves for surgeon C using the SNRT method. SNRT stands for suture needle retrograde threading; CUSUM stands for cumulative summationBack to article page