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Use of Corneal Power-Specific Constants to Improve the Accuracy of the SRKT Formula

Authored by Multiple
Posted on May 1, 2013
Topic: Eye Care, Eye Care Standards, Ethics & Research, Journal/Publication
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This study evaluated the effect of average corneal power (K) and axial length (AL) in a data-adjusted A-Constant for improving the refractive outcome in the Sanders-Retzlaff (SRK)/T formula.

The study concluded that for a steep cornea, the calculated A-constant was smaller than that of the entire K, but for a flat cornea, a larger A-constant was calculated. Using different A-constants based on the K improved the refraction outcomes relying on the SRK/T formula.

The 2013 article was published by Elsevier Inc. and copyrighted by the American Academy of Ophthalmology.

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