Objective To validate intraocular pressure (IOP) readings obtained in cats with the TonoVet® tonometer. Animal Studied IOP readings obtained with the TonoVet® were compared to IOP readings determined by manometry and by the Tono-Pen XL in 1 normal cat and 2 glaucomatous cats. TonoVet® and Tono-Pen XL readings were also compared in a further 6 normal and 9 glaucomatous cats. Procedures The anterior chambers of both eyes of 3 anesthetized cats were cannulated and IOP was varied manometrically, first increasing from 5 to 70 mm Hg in 5 mm Hg increments, then decreasing from 70 to 10 mm Hg in 10 mm Hg decrements. At each point, two observers obtained three readings each from both eyes, with both the TonoVet® and Tono-Pen XL . IOP was measured weekly for 8 weeks with both tonometers in 6 normal and 9 glaucomatous unsedated cats. Data were analyzed by linear regression. Comparisons between tonometers and observers were made by paired student t-test. Results The TonoVet® was significantly more accurate than the Tono-Pen XL (p=0.001), correlating much more strongly with manometric IOP. In the clinical setting, the Tono-Pen XL , underestimated IOP when compared with the TonoVet®. Conclusions Both the TonoVet® and Tono-Pen XL provide reproducible IOP measurements in cats, however the TonoVet® provides readings much closer to the true IOP than the Tono-Pen XL . The TonoVet® is superior in accuracy to the Tono-Pen XL for detection of ocular hypertension and/or glaucoma in cats in a clinical setting.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.