Figure 1From: Intraocular pressure and ocular pulse amplitude using dynamic contour tonometry and contact lens tonometryThe folded empirical cumulative distribution plot provides information about the distribution of the differences between the DCT and SmartLens® tonometry values compared to Goldmann. If two methods are unbiased with respect to each other, the mountain will be centered over zero. Long tails in the plot reflect large differences between the methods.Back to article page