Fig. 3From: Computing uveal melanoma basal diameters: a comparative analysis of several novel techniques with improved accuracyDifference in largest basal diameter measured by the one-chord method (1CM) and a the two-chord method (2CM), or b mathematical formula (MF), as a function of tumor size; one-chord method underestimated both other methods by an increasingly greater percentage for larger tumors. The grey area represents the 95% confidence intervalBack to article page