Simulated keratometry and central corneal thickness measured in cats by autokeratometer, ultrasonic pachymeter, and Galilei G6

Simulated keratometry and central corneal thickness measured in cats by autokeratometer, ultrasonic pachymeter, and Galilei G6

Objective The aims of this study were to compare the central corneal thickness (CCT) measured by an ultrasonic pachymeter (SP‐100, Tomey, Japão) versus the Galilei G6™ (Ziemer Ophthalmics System AG, Port, Switzerland) and to compare the simulated keratometry (SimK) measured by an autokeratometer (KM...

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Bibliographic Details
Published in:Veterinary ophthalmology Vol. 26; no. 2; pp. 128 - 134
Main Authors: Andrade Ramos, Leticia, Seullner Brandão, Cláudia Valéria, Arce, Carlos Guillermo, Micheline, Laura, Gordon Gandolfi, Micaella, Padovani, Carlos Roberto
Format: Journal Article
Language:English
Published: England 01-03-2023
Subjects:
Animals
cat
Cats
CCT
Cornea - diagnostic imaging
Female
Galilei
keratometer
Male
Prospective Studies
Reproducibility of Results
SimK
ultrasonic pachymeter
Ultrasonics
Ultrasonography - veterinary
Galilei
SimK
ultrasonic pachymeter
CCT
keratometer
cat
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Summary:Objective The aims of this study were to compare the central corneal thickness (CCT) measured by an ultrasonic pachymeter (SP‐100, Tomey, Japão) versus the Galilei G6™ (Ziemer Ophthalmics System AG, Port, Switzerland) and to compare the simulated keratometry (SimK) measured by an autokeratometer (KM 500 Nidek) versus the Galilei G6™. Animal studied Eighteen mixed‐breed cats, 10 males, and eight females, aged between 18 and 48 months, were evaluated (n = 36 eyes). Procedure(S) The cats were manually restrained using a blanket. The operator held the autokeratometer close to the eye and measured the SimK. Next, one anesthetic eye drop was applied; the operator lightly touched the corneal using the ultrasound pachymeter and measured the CCT. At another moment, the cats were sedated using meperidine and xylazine and then evaluated using the Galilei. Student's t‐test was employed to perform the statistical analyzes. Results Considering the CCT, the ultrasound pachymeter provided mean ± SD of 623.03 ± 48.17 μm and the Galilei 617.34 ± 53.38 μm. The autokeratometer produced a SimK of 38.20 ± 0.84D (8.84 ± 0.20 mm) and the Galilei 38.37 ± 0.83D (8.80 ± 0.19 mm). The CCT and SimK did not differ statistically regardless of the device used. Conclusion To the best of the authors' knowledge, this is the first work to compare the CCT measured by the Galilei versus the ultrasonic pachymeter and to compare the SimK measured by the Galilei versus the keratometer in cats. No statistical difference was found considering the CCT and the SimK measured by the different devices.
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ISSN:1463-5216
1463-5224
DOI:10.1111/vop.13039