Delayed Topographical and Refractive Changes Following Corneal Cross-Linking for Keratoconus.

There are variable reports in the existing literature of improvements in spherical and cylindrical error of up to 1.87 D and 4.62 D, respectively [ 3 , 4 , 6 , 7 , 8 , 9 , 10 , 11 ]; however, most did not reach statistical significance likely due to the insufficient power of the studies.

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