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A. D. Pennella, P. C. C. Ferreira, G. Lima, A. F. Costa, F. Ramalho; To Compare Central Corneal Thickness Measurements Obtained With Optical Coherence Tomography (oct), and Ultrasound Pachymetry. Invest. Ophthalmol. Vis. Sci. 2009;50(13):1749.
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© ARVO (1962-2015); The Authors (2016-present)
To compare central corneal thickness measurements obtained with optical coherence tomography (OCT), and ultrasound pachymetry
This retrospective study included 67 consecutive patients (134 eyes). Central corneal thickness measurements were obtained using ultrasound pachymetry (DGH) and Rtvue OCT (Fourier domain/ high resolution OCT). Data were analyzed using paired sample t test, Bland and Altman plot, and linear regression.
Average central corneal thickness was 551.35+/-43.82 microm for ultrasound pachymetry, 540.84+/-45.01 microm for Rtvue OCT. Compared to the ultrasound measurement, Rtvue OCT measurements significantly underestimated the corneal thickness by 12.81+/-16.34 microm (P<.01)
Rtvue OCT underestimated central corneal thickness compared to ultrasound pachymetry
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