J Korean Ophthalmol Soc > Volume 54(5); 2013 > Article
Journal of the Korean Ophthalmological Society 2013;54(5):723-727.
DOI: https://doi.org/10.3341/jkos.2013.54.5.723    Published online May 15, 2013.
Comparison of the Refractive Results Measured by Ultrasound and Partial Coherence Interferometers.
Jeing Ah Shin, Sung Kun Chung
Department of Ophthalmology and Visual Science, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea. eyedoc@catholic.ac.kr
접촉식 초음파와 부분결합간섭계를 이용한 생체계측시 백내장수술 후 굴절력 예측의 비교
신정아⋅정성근
Department of Ophthalmology and Visual Science, Yeouido St. Mary’s Hospital,
The Catholic University of Korea College of Medicine, Seoul, Korea
Abstract
PURPOSE
To compare ocular biometry measured by applanation ultrasonography and IOL Master(R), and evaluate the accuracies of the refractive outcome after cataract surgery. METHODS: The biometries of 76 cataractous eyes were measured using ultrasonography and IOL Master(R). The SRK-T formula was employed to predict the patient's implanted IOL power. Two months after cataract surgery, the refractive outcome was determined, and results from the 2 different biometry methods were compared. RESULTS: There were no statistically significant differences in axial length (AXL) and anterior chamber depth (ACD) between ultrasonography and IOL Master(R) (p = 0.501). When using ultrasonography, the mean absolute error (MAE) of the ultrasonography and IOL Master(R) was 0.53 +/- 0.30 diopter (D), 0.55 +/- 0.41 D, respectively. The difference between the 2 biometry methods was not statistically significant (p = 0.110). CONCLUSIONS: Although the difference was not statistically significant, AXL measured by IOL Master(R) was longer and ACD measured by IOL Master(R) was deeper than when measured by A-scan. This difference was more pronounced in patients with a short AXL. The accuracy of IOL power calculation was similar between the 2 devices.
Key Words: A-scan;Axial length;IOL Master(R);Partial coherence interferometer;Refractive error


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