Comparison of keratometry and white-to-white measurements obtained by Lenstar with those obtained by autokeratometry and corneal topography

Jinhai Huang, Giacomo Savini, Binbin Su, Rui Zhu, Yifan Feng, Shishi Lin, Hao Chen, Qinmei Wang

Research output: Contribution to journalArticle

Abstract

Purpose: To compare anterior eye segment measurements obtained using low optical coherence reflectometry (LENSTAR LS900, Haag-Streit), autokeratometry (RC-5000, Tomey) and corneal topography (Topolyzer, Wavelight). Methods: In 46 healthy subjects, flat keratometry (Kf), steep keratometry (Ks), mean keratometry (Km) and white-to-white (WTW) distance were measured by Lenstar, Tomey RC-5000 and Topolyzer. Results: Kf and Km measurements of Lenstar were significantly steeper than Tomey RC-5000 (both pf and Km measurements of Lenstar and Topolyzer, with a narrow 95% LoA. There were no significant differences between the Ks measurements of Lenstar and Tomey RC-5000, and Lenstar and Topolyzer. A good agreement was found between them with 95% LoA of -0.40 to 0.56D, and -0.56 to 0.64D, respectively. WTW measurements with Lenstar were greater than those with Tomey RC-5000 and Topolyzer (p=0.042, p

Original languageEnglish
Pages (from-to)363-367
Number of pages5
JournalContact Lens and Anterior Eye
Volume38
Issue number5
DOIs
Publication statusPublished - Oct 1 2015

Keywords

  • Keratometry
  • Optical low coherence reflectometry
  • Topography
  • White-to-white

ASJC Scopus subject areas

  • Ophthalmology
  • Optometry

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