Journal of the Korean Ophthalmological Society 2004;45(10):1665-1673.
Published online October 1, 2004.
The Reproducibility and Accuracy of Biometry Parameter Measurement from IOL Master(R).
Jae Hyuk Choi, Gyoung Hwan Roh
Department of Ophthalmology, Myung Gok Eye Research Institute, College of Medicine, Konyang University, Daejeon, Korea. eyedr00@yahoo.co.kr
IOL Master(R)로 측정된 생체 계수의 재현성과 정확성
최재혁 ( Jae Hyuk Choi ) , 노경환 ( Gyoung Hwan Roh )
Abstract
PURPOSE
To evaluate the reproducibility and accuracy of axial length and anterior chamber depth measurements from IOL Master(R). METHODS: The axial length and anterior chamber depth measurements in 30 eyes with normal crystalline lens, 30 eyes with cataract and 30 pseudophakic eyes were measured by two practitioners using IOL Master(R) followed by A-scan and Orbscan II. The reproducibility of IOL Master(R) was analyzed by comparing the results from the first and second practitioners. To evaluate the accuracy of IOL Master(R), the axial length was compared to A-scan and the anterior chamber depth was compared to A-scan and Orbscan II. RESULTS: The difference between the axial length and anterior chamber depth measurements from the two practitioners using IOL Master(R) were not statistically significant (p>0.05). The axial length of measurement from IOL Master(R) was 0.16 mm, 0.18 mm, and 0.96 mm longer than that from A-scan, in the normal, cataract and pseudophakic groups, respectively. In addition, the anterior chamber depth measurement from IOL Master(R) was significantly deeper than that from A-scan and Orbscan II (p<0.05). CONCLUSIONS: There was good reproducibility and accuracy of axial length and anterior chamber depth measurements from IOL Master(R). However, some patients who had media opacity were not measured using IOL Master(R). It is a noncontact method, which provides an alternative to A-scan.
Key Words: A-scan;Axial length;Anterior chamber depth;Orbscan II;Partial coherence interferometry


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