Comparison of anterior segment measurements with scheimpflug/placido photography-based topography system and IOLMaster partial coherence interferometry in patients with cataracts

Jinhai Huang, Na Liao, Giacomo Savini, Fangjun Bao, Ye Yu, Weicong Lu, Qingjie Hu, Qinmei Wang

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose. To assess the consistency of anterior segment measurements obtained using a Sirius Scheimpflug/Placido photography-based topography system (CSO, Italy) and IOLMaster partial coherence interferometry (Carl Zeiss Meditec, Germany) in eyes with cataracts. Methods. A total of 90 eyes of 90 patients were included in this prospective study. The anterior chamber depth (ACD), keratometry (K), corneal astigmatism axis, and white to white (WTW) values were randomly measured three times with Sirius and IOLMaster. Concordance between them was assessed by calculating 95% limits of agreement (LoA). Results. The ACD and K taken with the Sirius were statistically significantly higher than that taken with the IOLMaster; however, the Sirius significantly underestimated the WTW values compared with the IOLMaster. Good agreement was found for Km and ACD measurements, with 95% LoA of -0.20 to 0.54 mm and -0.16 to 0.34 mm, respectively. Poor agreement was observed for astigmatism axis and WTW measurements, as the 95% LoA was -23.96 to 23.36° and -1.15 to 0.37 mm, respectively. Conclusion. With the exception of astigmatism axis and WTW, anterior segment measurements taken by Sirius and IOLMaster devices showed good agreement and may be used interchangeably in patients with cataracts.

Original languageEnglish
Article number540760
JournalJournal of Ophthalmology
Volume2014
DOIs
Publication statusPublished - 2014

ASJC Scopus subject areas

  • Ophthalmology

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