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Surgically Induced Astigmatism Assessment: Comparison Between Three Corneal Measuring Devices
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Surgically Induced Astigmatism Assessment: Comparison Between Three Corneal Measuring Devices
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Journal Article
Surgically Induced Astigmatism Assessment: Comparison Between Three Corneal Measuring Devices
2015
Overview
PURPOSE:
To compare the findings of three corneal measuring devices for calculating surgically induced astigmatism (SIA) during cataract extraction.
METHODS:
Patients’ records were retrospectively reviewed to identify patients who had corneal astigmatism measurements before and at least 1 month after cataract surgery through 2.4-mm corneal incisions by all three tested devices (Lenstar LS900, Haag-Streit, Koeniz, Switzerland; IOLMaster 500, Carl Zeiss Meditec, Dublin, CA; and Atlas topographer, Carl Zeiss Meditec). Vector analysis was used to calculate the SIA for each measuring device.
RESULTS:
Seventy eyes of 49 patients were included. All three measuring devices had similar SIA results: the median SIAs were 0.45 diopters (D) for the Lenstar, 0.41 D for the IOLMaster, and 0.47 D for the Atlas topographer (Seventy eyes of 49 patients were included. All three measuring devices had similar SIA results: the median SIAs were 0.45 diopters (D) for the Lenstar, 0.41 D for the IOLMaster, and 0.47 D for the Atlas topographer (
P
= .884).
CONCLUSIONS:
The three evaluated anterior corneal measuring devices produced similar results in measuring SIA.
[[
J Refract Surg.
2015;31(4):244–247.]
Publisher
SLACK INCORPORATED
