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Figure 2

From: Involvement of anterior and posterior corneal surface area imbalance in the pathological change of keratoconus

Figure 2

Anterior surface area (As); (a) posterior surface area (Ps); (b) and anterior-posterior surface ratio (As/Ps); (c) in normal, forme fruste keratoconus (FFKC), and keratoconus (KC) subjects. Left-side column: the central 5.0-mm diameter area, Middle column: the central 6.0-mm diameter area, Right-side column: the central 7.0-mm diameter area. As/Ps was significantly smaller in the FFKC eyes than in the normal eyes at the central 5.0-mm, 6.0-mm, and 7.0-mm measurement point areas. NS: not significant.

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