Research Article
Corneal Astigmatism Measurements Comparison among Ray-Tracing Aberrometry, Partial Coherence Interferometry, and Scheimpflug Imaging System
Table 4
Difference between the wavefront corneal astigmatism and simulated corneal astigmatism measurements obtained using iTrace.
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D = diopters; S = simulated astigmatism; SE = standard error; W = wavefront astigmatism. Paired two-tailed t-test. Statistically significant at the 5% level. |