Peer-reviewed veterinary case report
How eyelid and neck pressure affect eye pressure in dogs
By Klein, Heidi E et al.·Published in Journal of the American Veterinary Medical Association·2011·School of Veterinary Medicine, United States·View original on PubMed →
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Original publication title: Effect of eyelid manipulation and manual jugular compression on intraocular pressure measurement in dogs.
- Species:
- dog
Plain-English summary
A study found that manipulating a dog's eyelids or applying pressure to both jugular veins can significantly raise the pressure inside the eye (intraocular pressure) in healthy dogs. Specifically, pulling the eyelids to the side while compressing both jugular veins caused the most noticeable increase in eye pressure. This information is important for veterinarians when measuring eye pressure, as these manipulations could lead to misleading results. Understanding these effects can help ensure more accurate eye health assessments in dogs.
People also search for: dog eye pressure measurement · why is my dog’s eye pressure high · dog eyelid manipulation effects
Abstract
OBJECTIVE: To determine the effect of eyelid manipulation and manual jugular compression on intraocular pressure (IOP) measurement in clinically normal dogs. DESIGN: Randomized clinical trial. ANIMALS: 30 dogs (57 eyes) without diseases or medications that affect IOP. PROCEDURES: An applanation tonometer was used to measure IOP during eyelid manipulation or jugular compression. Six manipulations were used in each eye, including minimal eyelid manipulation, maximal dorsoventral extension of the eyelids, lateral eyelid extension, manual compression of the ipsilateral jugular vein, manual compression of both jugular veins, and lateral eyelid extension with manual compression of both jugular veins. Skull type and position of globe in the orbit were recorded. RESULTS: The 2 manipulations that caused the greatest significant increase in mean IOP were lateral eyelid extension with compression of both jugular veins (difference from baseline IOP, 17.6 mm Hg; 95% confidence interval [CI], 15.7 to 19.5 mm Hg) and lateral eyelid extension alone (16.5 mm Hg; 95% CI, 14.6 to 18.4 mm Hg). Dorsoventral eyelid extension (6.42 mm Hg; 95% CI, 4.5 to 8.3 mm Hg) and compression of both jugular veins alone (3.0 mm Hg; 95% CI, 1.1 to 5.0 mm Hg) significantly increased mean IOP, compared with baseline. Compression of the ipsilateral jugular vein increased mean IOP (0.3 mm Hg; 95% CI, -1.6 to 2.2 mm Hg) from baseline, but not significantly. CONCLUSIONS AND CLINICAL RELEVANCE: Traction on the eyelids or pressure on both jugular veins can significantly increase IOP values as measured by use of applanation tonometry in clinically normal dogs.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/21568774/