Fig. 4

Merged iris drawings showing the patterns of tumour extent according to various patient and tumour characteristics. The image details and colour scaling are as described in Fig. 3. Note that the maximum number of overlapping tumours differs between the images. The following numbers in parentheses refer to the maximum number of overlapping tumours. A Females (12); B males (7); C patients <56 years of age (11); D patients ≥56 years of age (10); E tumours arising from a pre-existing naevus (10); F tumours arising de novo (10); G Tumours with ectropion uveae (9); H tumours without ectropion uveae (10); I eyes with secondary glaucoma (5); J eyes without secondary glaucoma (13)