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Vector analysis for the TECNIS Synergy group and the AcrySof IQ PanOptix group: (A,D) Preoperative corneal astigmatism and postoperative refractive astigmatism cumulative histogram measuring magnitude; (B,E) Preoperative corneal astigmatism and postoperative refractive astigmatism double-angle plots showing the centroid and standard deviation; (C,F) Refractive astigmatism prediction error double-angle plot, postoperative refractive astigmatism prediction error values.
