Purchase this article with an account.
S. C. Barbarino, A. J. Kanellopoulos; Comparison of Central Corneal Thickness, Best Anterior and Posterior Cornea Sphere Measurement With Pentacam, Orbscan, and Ultrasound. Invest. Ophthalmol. Vis. Sci. 2007;48(13):3935. doi: https://doi.org/.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
The purpose of this study was to compare central corneal thickness (CCT), best fit anterior and posterior sphere measurements obtained with the Pentacam (Oculus) with scanning slit topography (Orbscan; Bausch & Lomb), and with ultrasound pachymetry (Nidek).
CCT in 50 consecutive healthy, un-operated practice patients (100 eyes) was measured twice with each modality.
The mean CCT values as determined with the different modalities (+/-standard deviation) were: 532+/-29 microm, 555+/-37 microm, 530+/-34 microm, respectively. The differences between modalities (+/-95% limits of agreement) were -2.8+/-21 microm between rotating Scheimpflug and ultrasound, 25+/-31.2 microm between scanning slit and ultrasound, and 23+/-27 microm between scanning slit and rotating Scheimpflug imaging.
In the assessment of normal corneas, the Pentacam measured CCT values closer to ultrasound pachymetry and with less variability compared with Orbscan.
This PDF is available to Subscribers Only