Thin Spherical Cornea - OCULUS Pentacam Interpretation Manual

10 Screening for refractive surgery

10.5 Thin spherical cornea

This 4 Maps Selectable display
anterior elevation and anterior sagittal maps) and a more pronounced astigmatic pattern on the
posterior corneal surface. Because the optical properties of the posterior cornea (no cornea/air
interface) differ from those of the anterior surface, the refractive astigmatism of the posterior
cornea is listed only as 0.3 D. The pachymetry map shows a thin cornea (thinnest reading 496 μm)
with a slight inferior displacement of the thickness distribution.
DIAGNOSIS - normal thin spherical cornea with posterior astigmatism
Figure 63: 4 Maps Selectable showing a thin spherical cornea
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(Figure 63) shows a relatively spherical anterior cornea (both