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12 Belin/Ambrósio Enhanced Ectasia Display
Figure 112: Interesting example of the value of the Belin/Ambrósio Enhanced Ectasia
Display (version II) and the "D" values
This cornea has a number of variables that fall in the suspicious area. Both the anterior and
posterior elevations show small central yellow zones and the pachymetric progression and TP
displacement are also in the yellow zone. Only the thinnest value at 568 μm is normal. The
combination of a number of suspicious values, however, is enough to put the overall reading "D"
well outside of the normal range at 3.23 SD from the norm and it is therefore displayed in red.
Additionally, this display warns the user that there is insufficient corneal coverage (the BFS on the
anterior surface is boxed in yellow and the posterior surface in red) and the user should attempt a
repeat image which would give a full 8.0 mm of analyzable data for the BFS computation.
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