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Axial length measurement acquisition rates of two optical biometers in cataractous eyes

Authors Epitropoulos A

Received 18 February 2014

Accepted for publication 11 April 2014

Published 21 July 2014 Volume 2014:8 Pages 1369—1376

DOI https://doi.org/10.2147/OPTH.S62653

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4


Alice Epitropoulos

The Ohio State University Wexner Medical Center, Columbus, OH, USA

Purpose: To compare the ability of two optical biometers to acquire the axial length (AL) measurement in cataractous eyes.
Methods: This prospective, comparative, single-center study comprised 105 eyes (63 patients). AL was acquired by the composite mean value of 20 measurements (composite-20 IM) and five measurements (composite-5 IM) (IOLMaster® 500 version 7.1 software), and the standard mean value of the first five measurements (standard-5 LS, Lenstar LS 900®). Anterior chamber depth (ACD) and average keratometry (K) readings were acquired.
Results: AL was acquired in 83.8%, 92.4%, and 84.8% of eyes for the composite-5 IM, composite-20 IM, and standard-5 LS, respectively. Standard-5 LS AL measurements were significantly shorter (P<0.001). IOLMaster® 500-acquired ACD (corneal epithelium to lens) measurements were significantly shorter (P<0.001). IOLMaster® 500 average K measurements were significantly steeper (P<0.001).
Conclusion: The composite-20 IM had the highest AL acquisition success rate of the three versions evaluated. AL, ACD, and average Ks were statistically different between the two biometers, although the differences were clinically insignificant.

Keywords: cataract, biometry, IOL power calculation

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