J Korean Ophthalmol Soc > Volume 56(10); 2015 > Article
Journal of the Korean Ophthalmological Society 2015;56(10):1558-1565.
DOI: https://doi.org/10.3341/jkos.2015.56.10.1558    Published online October 15, 2015.
Comparison of Ocular Biometry Using Low-Coherence Reflectometry with Other Devices for Intraocular Lens Power Calculation.
Ji Won Kim, Hoon Lee, Ji Won Jung, Jin Sun Kim, Hyung Keun Lee, Kyoung Yul Seo, Eung Kweon Kim, Tae Im Kim
1The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea. taeimkim@gmail.com
2Department of Ophthalmology, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea.
3Department of Ophthalmology, Inha University School of Medicine, Incheon, Korea.
4Myung-Gok Eye Research Institute, Kim's Eye Hospital, Konyang University College of Medicine, Seoul, Korea.
저간섭성 반사계와 기존 장비 간의 안구생체계측 및 백내장 수술 후 굴절오차의 비교
김지원1⋅이 훈1,2⋅정지원3⋅김진선4⋅이형근1⋅서경률1⋅김응권1⋅김태임1
연세대학교 의과대학 안과학교실 시기능개발 연구소1, 가톨릭관동대학교 의과대학 국제성모병원 안과학교실2, 인하대학교 의과대학 안과학교실3, 건양대학교 의과대학 김안과병원 명곡안연구소4
Received: 14 November 2014   • Revised: 3 June 2015   • Accepted: 31 July 2015
Abstract
PURPOSE
To compare axial length (AL) and keratometry (K) using optical low-coherence reflectometry (OLCR, Lenstar LS900(R), Haag-Streit, Bern, Switzerland) with current ocular biometry devices and evaluate the accuracy of intraocular lens (IOL) power calculation. METHODS: In this prospective, comparative observational study of eyes with cataracts, AL and K were measured using an OLCR device (Lenstar LS900(R), Haag-Streit), partial coherence interferometry (PCI, IOL Master(R), Carl Zeiss, Jena, Germany), A-scan (Eyecubed) and automated keratometry (KR-7100, Topcon, Tokyo, Japan). IOL power calculation was performed using the Sanders-Retzlaff-Kraff (SRK/T) formula. The IOL prediction error (PE) was calculated by subtracting the predicted IOL power from the postoperative (PO) IOL power (PO 4 weeks, PO 12 weeks). RESULTS: A total of 50 eyes of 39 patients with cataracts (mean age 67.12 +/- 8.51 years) were evaluated in this study. AL and K were not significantly different between the OLCR device and other devices (analysis of variance [ANOVA], p = 0.946, 0.062, respectively). The mean PE in IOL power calculation was -0.22 +/- 0.50D with the OLCR device, 0.08 +/- 0.45D with the PCI device and -0.01 +/- 0.48D with A-scan and automated keratometry (ANOVA, p = 0.006). The highest percentage of eyes with PE smaller than +/- 0.5D was IOL Master(R) followed by Eyecubed and then Lenstar LS900(R). The mean absolute PE was not statistically significant among the 3 devices (ANOVA, p = 0.684). CONCLUSIONS: Ocular biometry measurements were comparable between the OLCR device and the PCI ultrasound device. However, the IOL power prediction showed significant differences among the 3 devices. Therefore, the differences in application of these devices should be considered.
Key Words: Axial length;IOL-Master;Keratometry;Lenstar LS900;Optical low-coherence reflectometry (OLCR)


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