Comparison of Biometric Measurements and Refractive Results between Applanation Ultrasonography and Three Different Interferometries.
10.3341/jkos.2015.56.11.1720
- Author:
Ji Sun MOON
1
;
Jeong Ah SHIN
;
Gi Hyun BAE
;
Sung Kun CHUNG
Author Information
1. Department of Ophthalmology, Sahmyook Medical Center, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Axial length;
OA-2000(R);
Optical low coherence reflectometry;
Partial coherence interferometer;
Refractive error
- MeSH:
Anterior Chamber;
Biometry;
Cataract;
Interferometry*;
Lenses, Intraocular;
Optical Devices;
Refractive Errors;
Ultrasonography*
- From:Journal of the Korean Ophthalmological Society
2015;56(11):1720-1727
- CountryRepublic of Korea
- Language:Korean
-
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.
