Abstract
SummaryWe present different display techniques for the anterior and posterior corneal surface such as axial or tangential power map, pachymetry map, height or enhanced height map or results of mathematical decomposition techniques such as Fourier or Zernike maps. We discuss the advantage and drawbacks of those maps for detection and evaluation of keratoconus severity. The variety of the output maps of different instruments such as the Orbscan IIz or TMS‐5, the Pentacam and the Casia‐1000 are shown and discussed in detail. Additional information of new parameters such as ratio of anterior to posterior surface curvature are introduced and the diagnostic value for evaluation of early forms of keratoconus will be tailored‐out.
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