Comparison of Biometric Measurements and Refractive Results between Applanation Ultrasonography and Three Different Interferometries.

Moon, Ji Sun; Shin, Jeong Ah; Bae, Gi Hyun; Chung, Sung Kun

doi:2015.56.11.1720

J Korean Ophthalmol Soc > Volume 56(11); 2015 > Article

Original Article

Journal of the Korean Ophthalmological Society 2015;56(11):1720-1727.
DOI: https://doi.org/10.3341/jkos.2015.56.11.1720 Published online November 15, 2015.

Comparison of Biometric Measurements and Refractive Results between Applanation Ultrasonography and Three Different Interferometries.

Ji Sun Moon, Jeong Ah Shin, Gi Hyun Bae, Sung Kun Chung

¹Department of Ophthalmology, Sahmyook Medical Center, Seoul, Korea.
²Department of Ophthalmology and Visual Science, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. eyedoc@catholic.ac.kr

접촉식 초음파와 세 가지 광학간섭계를 이용한 생체계측과 백내장수술 후 굴절력의 비교

지선¹⋅신정아²⋅배지현¹⋅정성근²

삼육서울병원 안과¹, 가톨릭대학교 의과대학 성바오로병원 안과 및 시과학교실²

Received: 19 June 2015 • Revised: 2 July 2015 • Accepted: 4 September 2015

Abstract

PURPOSE
To compare ocular biometry and refractive results measured using conventional applanation ultrasonography and 3 different optical interferometries, Lenstar LS900(R), AL-Scan(R) and OA-2000(R). METHODS: The biometries of 31 cataractous eyes were measured using ultrasonography, Lenstar LS900(R), AL-Scan(R) or OA-2000(R). The axial length, anterior chamber depth and keratometry were measured. The SRK/T formula was used to calculate intraocular lens power. Two months after cataract surgery, the refractive outcome was determined and results from the 4 different biometry methods were compared. RESULTS: Axial lengths were 23.39 +/- 0.95 mm, 23.42 +/- 0.98 mm, 23.43 +/- 0.98 mm and 23.44 +/- 0.98 mm measured using ultrasonography, Lenstar LS900(R), AL-Scan(R) and OA-2000(R), respectively with no statistically significant differences observed (p = 0.996). The anterior chamber depth and keratometry were 3.14 +/- 0.41 mm, 3.10 +/- 0.38 mm and 3.13 +/- 0.39 mm (p = 0.936) and 44.41 +/- 1.52 D, 44.54 +/- 1.57 D and 44.44 +/- 1.52 D (p = 0.937) for Lenstar LS900(R), AL-Scan(R) and OA-2000(R) respectively. There were no statistically significant differences between the 3 optical devices. The mean absolute error of the 4 different devices were not statistically significant (p = 0.722). CONCLUSIONS: The ocular biometric measurements and prediction of postoperative refraction using ultrasonography, Lenstar LS900(R), AL-Scan(R) or OA-2000(R) showed no significant differences.

Key Words: Axial length;OA-2000(R);Optical low coherence reflectometry;Partial coherence interferometer;Refractive error