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Fig. 2 | BMC Ophthalmology

Fig. 2

From: AstigMATIC: an automatic tool for standard astigmatism vector analysis

Fig. 2

Examples of the four vector graphs that are generated by AstigMATIC from the pre- and post-operative cylinder magnitude and axis in within-the-rule (WTR) astigmatism eyes (a), against-the-rule (ATR) astigmatism eyes (b), and oblique astigmatism eyes (c). The TIA and SIA data points of WTR, ATR and oblique cases are located in the red, blue and white regions of the graphs, respectively. The red diamonds indicate the vector mean position. The vector mean values are displayed in the call-out boxes along with the arithmetic means or geometrical mean. Each individual vectorial point is plotted as a black line ending by a blue circle marker

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