J Korean Ophthalmol Soc.  2016 Oct;57(10):1542-1548. 10.3341/jkos.2016.57.10.1542.

Utility of the Swept Source Optical Coherence Tomography for Measurements of Central Corneal Thickness

Affiliations
  • 1Cheil Eye Hospital, Daegu, Korea. vit.s0324@gmail.com
  • 2Department of Ophthalmology, Keimyung University School of Medicine, Daegu, Korea.

Abstract

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.

Keyword

Anterior segment optical coherence tomography; Central corneal thickness; Orbscan II; Swept source optical coherence tomography; Ultrasound pachymetry

MeSH Terms

Healthy Volunteers
Tomography, Optical Coherence*
Ultrasonography
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