Effects of aging on corneal parameters measured with Pentacam in healthy subjects.

The borderline significant change detected in Jackson’s cross cylinder power vector component at 45° (unadjusted p = 0.047) is explained by a significant increase in older subjects with low to mid-range initial J45 values; values in younger subjects and in those with mid to high-range baseline readings did not change with advancing age (Fig. 2 ).

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