Assessing progression of keratoconus: novel tomographic determinants.

Eye Vis (Lond) · 2016 · PMC4787036 · PMID 26973847

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The enhanced reference surface was not only qualitatively useful in visualizing subtle or early ectatic change, but the elevation difference between a standard BFS and the enhanced reference surface also proved to be highly significant quantitatively in separating normal eyes from those with ectatic change [ 50 ].

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