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Fig. 5 | Eye and Vision

Fig. 5

From: Assessing progression of keratoconus: novel tomographic determinants

Fig. 5

Anterior and Posterior elevation maps with the standard BFS (upper maps) and “enhanced reference surface” (lower maps). The standard anterior map (upper left) shows minimal changes against the enhanced reference surface (lower left) as the anterior surface is normal. The standard posterior elevation (upper right) shows an early positive island of elevation that is exaggerated using the enhanced reference surface (lower right) (Oculus Pentacam)

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