Comparison of central corneal thickness in dogs measured by ultrasound pachymetry and ultrasound biomicroscopy. (February 2018)

• Record Type: Journal Article
• Authors: Martín-Suárez, Eva; Galán, Alba; Morgaz, Juan; Guisado, Alicia; Gallardo, José María; Gómez-Villamandos, Rafael Jesús
• Is Part Of: Veterinary journal. Volume 232(2018)
• Page Start: 13
• Page End: 14
• Publication Date: 2018-02
• Subjects: Beagle -- Canine -- Central corneal thickness -- Ultrasound biomicroscopy -- Ultrasound pachymetry; Veterinary medicine -- Periodicals; 636
• DOI: 10.1016/j.tvjl.2017.12.003
• Languages: English
• ISSNs: 1090-0233

Abstract

Highlights: Ultrasound biomicroscopy (UBM) and ultrasound pachymetry (UP) can be used interchangeably for measuring corneal thickness. Differences in central corneal thickness (CCT) in healthy Beagle dogs measured by UBM and UP were approximately 5%. The cornea was thicker in male dogs than female dogs and in dogs. CCT was higher in male than female dogs, and in dogs weighing ≥15 kg than in lighter dogs; sex was correlated with weight. Abstract: Ultrasound pachymetry (UP) is currently the most common technique used to evaluate central corneal thickness (CCT). New devices which allow assessment of CCT without corneal contact have been compared, but there are discrepancies among instruments. The aim of this study was to compare CCT measurements obtained by UP and ultrasound biomicroscopy (UBM) in 28 eyes of 14 healthy Beagles dogs. Mean CCT ± standard deviation (SD) were 552 ± 63 μm for UP and 551 ± 55 μm for UBM. UBM showed both a fixed and proportional bias when compared to ultrasound pachymetry, but this was not considered to be clinically important. Measured CCT did not differ between UP and UBM ( P = 0.796). The intra-class correlation coefficient indicated a strong agreement between methods (0.990). The CCT measurements between left (548 ± 61 μm) and right (555 ± 59 μm) eyes did not differ ( P = 0.760). Male dogs had higher CCT measurements than female dogs ( P = 0.038).