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KMID : 0360220160570101542
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Journal of the Korean Ophthalmological Society
2016 Volume.57 No. 10 p.1542 ~ p.1548
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Utility of the Swept Source Optical Coherence Tomography for Measurements of Central Corneal Thickness
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Kim Im-Gyu
Lee Chong-Eun
Lee Jun-Seok
Seo Sam
Lee Kyoo-Won
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Abstract
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Purpose: To evaluate the efficacy of swept source optical coherence tomography (SS-OCT) by comparing the measurement of central corneal thickness (CCT) to the measurement obtained using Orbscan II, anterior segment optical coherence tomography (AS-OCT) and ultrasound pachymetry.
Methods: One examiner measured the CCT in 65 eyes of 65 healthy subjects using Orbscan II, AS-OCT, SS-OCT and ultrasound pachymetry. The mean values and correlations were analyzed.
Results: The average CCT measurements obtained using Orbscan II, AS-OCT, SS-OCT and ultrasound pachymetry were 534.83 ± 38.46, 517.80 ± 32.48, 528.22 ± 33.71 and 528.02 ± 34.90 μm, respectively. A significant linear correlation was observed among Orbscan II, AS-OCT, SS-OCT and ultrasound pachymetry (r > 0.894, p < 0.001). There was no significant difference between the SS-OCT and ultrasound pachymetry (p = 0.782).
Conclusions: The results of the 4 methods were significantly correlated and the SS-OCT reached a high level of agreement when CCT was determined using ultrasound pachymetry. The CCT measurements using SS-OCT is a better alternative for ultrasound pachymetry than Orbscan II and AS-OCT.
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KEYWORD
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Anterior segment optical coherence tomography, Central corneal thickness, Orbscan II, Swept source optical coherence tomography, Ultrasound pachymetry
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