Fig. 1
From: The impact of irregular corneal shape parameters on visual acuity and contrast sensitivity
A schematic illustration of the corneal anterior surface demonstrates a real corneal surface elevation from an ideally spherical corneal surface, i.e. each point in the graph represents an elevation (measured in micrometres) from the imaginary ideally spherical corneal surface. The particular image also shows the maximum (Max) and the minimum (Min) elevation points. Dotted circular lines represent the analysed circles of 1, 2, and 3 mm radius. The darker color represents higher points, while the lighter color, lower points