MKI67 and neoplasm: Non-parametric tests were performed for each zone separately with the following results concerning the ratio of Ki67-positive LVs: (1) tumour versus tumour adjacent conjunctiva (50 μm zone) p = 0.063 (not significant); (2) tumour versus mid-peripheral zone (50–200 μm) p = 0.021; (3) tumour versus peripheral zone (200–300 μm) p = 0.031; (4) tumour versus distant, presumably normal conjunctiva >300 μm from the tumour border p = 0.002 (fig 2).