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10 Screening for refractive surgery
This 4 Maps Selectable display
(Figure 59)
shows a normal with-the-rule astigmatic cornea (astig.
2.6 D). Both the anterior and posterior elevations demonstrate a similar pattern, as does the
anterior sagittal curvature. The curvature maps reveal a steep cornea (K1 = 47.6, K2 = 50.2), but
the elevation maps do not reveal any suspicious areas. The pachymetry map is well centered with
a thinnest reading of 546 μm. This is an astigmatic cornea with steep curvature, but otherwise
normal.
DIAGNOSIS - normal astigmatic eye
Figure 59: 4 Maps Selectable showing an astigmatic cornea
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