ArticleVeterinary ophthalmology2021
Validation and comparison of four handheld tonometers in normal ex vivo canine eyes.
Article in Veterinary ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
16 citing papers in PubMed, 26 citations in OpenAlex.
- Ex Vivo Validation of the TONOVET Plus and TONOVET Pro in Cynomolgus Monkeys (Macaca fascicularis): Comparison of Canine and Lapine Calibration Modes.Veterinary ophthalmology · 2026Article
- Evaluation of the iFalconBMC veterinary research · 2026Article
- Imaging Canine Post-Trabecular Aqueous Outflow Pathways: Effect of Acute Intraocular Pressure Elevation in Normal Eyes.Veterinary ophthalmology · 2026Article
- Comparison of Rebound and Applanation Tonometry in Eyes With Focal Corneal Edema.Veterinary ophthalmology · 2026Article
- Comparison of TonoLab, TonoVet Plus, and Tono-Pen AVIA Vet Tonometers for Measuring Intraocular Pressure in Rats.Veterinary ophthalmology · 2026Article
- Comparison of three rebound tonometers in rabbits.Scientific reports · 2025Article
- Comparison of measurement performance among Tono-Vera vet, Tono-Pen vet, and Tono-Vet plus using an ex vivo porcine eye model.BMC veterinary research · 2025Article
- Canine intraocular pressure dynamics during mild-pain ophthalmic procedures in three premedication protocols.Veterinary world · 2025Article
- Validation of the eyeTelemed IOPvet indentation tonometer for use in dogs.Veterinary ophthalmology · 2024Article
- An assessment of bacterial transmission via rebound tonometry: AnOpen veterinary journal · 2024Article
- Comparison of three methodologies for measuring intraocular pressure in healthy cats.Veterinary world · 2024Article
- Validation of the Reichert® Tono-Vera® Vet rebound tonometer in normal ex vivo canine eyes.Veterinary ophthalmology · 2024Article
- Comparison of the TONOVET Plus®, TonoVet®, and Tono-Pen Vet™ tonometers in normal cats and cats with glaucoma.Veterinary ophthalmology · 2023Article
- Comparison of three rebound tonometers in normal and glaucomatous dogs.Veterinary ophthalmology · 2023Article
- Comparison among TonoVet, TonoVet Plus, Tono-Pen Avia Vet, and Kowa HA-2 portable tonometers for measuring intraocular pressure in dogs.Veterinary world · 2021Article
- Evaluation of the effect of disposable tonometer cover brand on performance of Tono-Pen Vet in canine eyes.Veterinary ophthalmology · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
objectivesTo determine the accuracy and precision of the Icare ANIMALS & PROCEDURES: The anterior chambers of six normal dog eyes were cannulated ex vivo. IOP was measured with the TONOVET (TV01), TONOVET Plus, Tono-Pen Vet™, and Tono-Pen AVIA Vet™ at manometric IOPs ranging from 5 to 70 mm Hg. Data were analyzed by linear regression, ANOVA and Bland-Altman plots. A P value ≤ .05 was considered significant.
resultsIntraocular pressure values obtained using the TONOVET Plus and TV01 were significantly more accurate than with the Tono-Pen VET and Tono-Pen AVIA Vet, particularly at higher IOPs (30-70 mm Hg). Accuracy was not significantly different between any of the devices in the low to normal physiologic IOP range (5-25 mm Hg). Level of precision was high for all devices, though the TONOVET Plus was more precise than the Tono-Pen Vet in the 5-25 mmHg range and the TV01 was more precise than the Tono-Pen AVIA Vet over the whole IOP range.
conclusionsAll devices underestimated IOP, particularly at higher pressures. Rebound tonometers were more accurate over the full range of IOP tested and in the high IOP range; however, there were no significant differences in accuracy among devices in the physiologic IOP range. All tonometers can provide clinically useful IOP readings in dogs, but rebound and applanation tonometers should not be used interchangeably.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.