Noise-Floor Benchmarking of Surgically Induced Astigmatism After Cataract Surgery: Anterior Versus Total Keratometry
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The authors aimed to quantify the true surgically induced astigmatism (SIA) following cataract surgery and distinguish it from measurement variability. By comparing pre- and postoperative corneal astigmatism using standard and total keratometry, they found that a significant portion of the measured SIA overlapped with noise, indicating a modest systematic component. Their findings suggest that noise-floor benchmarking is essential for accurately interpreting SIA performance.
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