Figure 1From: Vector analysis of low to moderate astigmatism with small incision lenticule extraction (SMILE): results of a 1-year follow-upThe double-angle plots of the astigmatism. The preoperative TIA (A) and postoperative DV at 1 month (B), 6 months (C) and 12 months (D). The vector of astigmatism is represented by the red spots and the blue spot indicates the centroid value of each plotted vector.Back to article page