Peer-reviewed veterinary case report
Comparing two eye pressure tests in dogs with glaucoma
By Slack, J M et al.·Published in The Veterinary record·2012·Department of Veterinary Clinical Sciences, United States·View original on PubMed →
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Original publication title: Comparison of a rebound tonometer with an applanation tonometer in dogs with glaucoma.
- Species:
- dog
Plain-English summary
Eighteen dogs diagnosed with glaucoma were examined to compare two types of devices used to measure eye pressure. The TonoVet, which doesn't require numbing drops, showed higher eye pressure readings than the Tono-Pen XL after numbing drops were applied. This difference was significant in dogs with glaucoma, meaning the TonoVet might indicate more severe eye pressure. For dogs with normal eye pressure, both devices gave similar results. It's important to use the same device consistently when monitoring eye pressure in dogs to ensure accurate tracking of their condition.
People also search for: dog glaucoma symptoms · how to measure dog eye pressure · TonoVet vs Tono-Pen for dogs
Abstract
Eighteen dogs which presented to the Purdue University Ophthalmology Service with a final diagnosis of primary or secondary glaucoma, and 5 dogs with normal eye examinations, were evaluated. Each dog underwent a complete ophthalmic examination. An eye was categorised as glaucomatous if an intraocular pressure (IOP) measurement ≥25 mm Hg was obtained, and clinical signs consistent with glaucoma were present. Readings with the TonoVet were always performed first without topical anaesthesia. After obtaining readings with the TonoVet, one drop of proparacaine was applied to each eye, followed by IOP measurement with the Tono-Pen XL. As IOP increased, the difference between measurements obtained with the two tonometers was statistically significant. The TonoVet consistently gave higher IOP values compared with the Tono-Pen XL in glaucomatous eyes with Tono-Pen XL IOP readings ≥25 mm Hg. IOP readings were not significantly different between tonometers for normotensive eyes. Based on the results of the current study, the same device should be used for monitoring of IOP in individual patients.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/22915681/