Fig. 3
Iris charts displayed as right eyes, so that the left part of the figures represents the temporal side of the iris. The horizontal and vertical lines passing through the pupil centre divide the iris into quadrants and hemispheres. A Geometric centres of 28 iris melanomas indicated by blue dots. B Merged iris drawings showing the pattern of tumour extent of 29 iris melanomas. The colours on the chart indicate the number of overlapping iris melanomas according to the scale bar to the right. The top of the scale (dark red) represents the maximum number of overlapping tumours (17), and the bottom (dark blue) indicates no tumours