| Comparison of Ocular Biometry Measured Using Four Applanation Ultrasonographic Biometry Devices. |
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Byung Su Lim, Sang Kyu Lee, Eun Chul Kim |
1Department of Ophthalmology and Visual Science, Bucheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Bucheon, Korea. eunchol@hanmail.net
2Kangnam St. Mary's LASIK Center, Seoul, Korea. |
| 4가지 접촉식 초음파를 이용한 생체계측 시 백내장수술 후 굴절력 예측의 비교 |
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임병수1⋅이상규2⋅김은철1 |
Department of Ophthalmology and Visual Science, Bucheon St. Mary's Hospital, The Catholic University of Korea College of Medicine1, Bucheon, Korea
Kangnam St. Mary's LASIK Center2, Seoul, Korea |
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| Abstract |
PURPOSE
To compare ocular biometry measured using 4 applanation ultrasonographic biometry devices and evaluate the accuracies of the refractive outcomes after cataract surgery. METHODS: A total of 60 eyes in 60 patients who received cataract surgery were included in the present study. The axial length was measured using applanation ultrasonographic biometry devices (Aviso(R), Hi-Scan(R), UD-6000(R), P37-II(R)). Additionally, keratometry was measured using an autokeratometer (Topcon KR 8000) and the SRK/T formula was used to calculate intraocular lens (IOL) power. Two months after cataract surgery, the refractive outcome was determined, and results from the 4 different applanation ultrasonographic biometry devices were compared. RESULTS: Axial lengths were 23.52 +/- 1.45 mm, 23.51 +/- 1.04 mm, 23.54 +/- 1.58 mm, and 23.52 +/- 1.38 mm measured using Aviso(R), Hi-Scan(R), UD-6000(R), and P37-II(R), respectively with no statistically significant differences observed (p = 0.92). The mean absolute error (MAE) of the Aviso(R), Hi-Scan(R), UD-6000(R), and P37-II(R) was 0.41 +/- 0.32 diopter (D), 0.40 +/- 0.30 D, 0.36 +/- 0.26 D, and 0.39 +/- 0.26 D, respectively. The mean numerical error (MNE) was 0.39 +/- 0.37 D, 0.36 +/- 0.32 D, 0.26 +/- 0.29 D, and 0.38 +/- 0.32 D, respectively. The differences between the 4 different applanation ultrasonographic biometry devices were not statistically significant (p = 0.90, p = 0.81). CONCLUSIONS: The ocular biometric measurements and prediction of postoperative refraction using Aviso(R), Hi-Scan(R), UD-6000(R), P37-II(R) showed no significant differences. |
| Key Words:
Applanation ultrasonographic biometry;A-scan;Axial length;Refractive error |
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