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목적 : To evaluate the agreement between the biometers measured by optical low-coherence interferometry (OLCI, Aladdin), and those measured by Scheimpflug imaging combined with partial coherence interferometry (Pentacam AXL) in cataract patients.
방법 : The axial length (AXL), corneal power (K), anterior chamber depth (ACD), and corneal astigmatism were measured with the 2 devices in patients with cataract. The difference and correlation was evaluated with a paired t test (p) and the Pearson correlation coefficient (r), respectively
결과 : One hundred sixty-four eyes of 89 patients were analyzed. The OLCI mean AXL showed excellent agreement and correlation (OLCI 23.26 mm, Pentacam AXL 23.24 mm, p = 0.076, r = 0.990). However, OLCI measured a lower corneal power with high correlation (flat K -0.08 Diopters (D), steep K -0.02 D, and mean K -0.05 D, p = 0.043, 0.585, and 0.107, r = 0.945, 0.953 and 0.961, respectively). The OLCI measured a shallower mean ACD (-0.08 mm, p = 0.000, r =0.830). Vector analysis showed a statistically significant difference in astigmatism measurements.
결론 : Although the OCLI and Pentacam AXL showed strong correlation for AXL, K, ACD, and corneal astigmatism in cataract patients, there were the small but statistically significant differences in flat K, ACD, and corneal astigmatism. The 2 devices are not interchangeable for calculating the intraocular lens power.
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