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. Author manuscript; available in PMC: 2011 Apr 10.
Published in final edited form as: Optom Vis Sci. 2005 Dec;82(12):1038–1046. doi: 10.1097/01.opx.0000192350.01045.6f

Figure 4.

Figure 4

Decision Surface. Three-dimensional, right-eye representation of corneal surface features at the boundary between eyes with keratoconus and normal eyes. This surface was constructed from the Zernike polynomial coefficients (3.5 mm radius fit) and their associated values derived from the C4.5 decision tree; total n = 244; Keratoconus n = 112; Normal = 13